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

/**
 * Get the column headers for a screen
 *
 * @since 2.7.0
 *
 * @param string|WP_Screen $screen The screen you want the headers for
 * @return string[] The column header labels keyed by column ID.
 */
function get_column_headers( $screen ) {
	static $column_headers = array();

	if ( is_string( $screen ) ) {
		$screen = convert_to_screen( $screen );
	}

	if ( ! isset( $column_headers[ $screen-&gt;id ] ) ) {
		/**
		 * Filters the column headers for a list table on a specific screen.
		 *
		 * The dynamic portion of the hook name, `$screen-&gt;id`, refers to the
		 * ID of a specific screen. For example, the screen ID for the Posts
		 * list table is edit-post, so the filter for that screen would be
		 * manage_edit-post_columns.
		 *
		 * @since 3.0.0
		 *
		 * @param string[] $columns The column header labels keyed by column ID.
		 */
		$column_headers[ $screen-&gt;id ] = apply_filters( &quot;manage_{$screen-&gt;id}_columns&quot;, array() );
	}

	return $column_headers[ $screen-&gt;id ];
}

/**
 * Get a list of hidden columns.
 *
 * @since 2.7.0
 *
 * @param string|WP_Screen $screen The screen you want the hidden columns for
 * @return string[] Array of IDs of hidden columns.
 */
function get_hidden_columns( $screen ) {
	if ( is_string( $screen ) ) {
		$screen = convert_to_screen( $screen );
	}

	$hidden = get_user_option( &#039;manage&#039; . $screen-&gt;id . &#039;columnshidden&#039; );

	$use_defaults = ! is_array( $hidden );

	if ( $use_defaults ) {
		$hidden = array();

		/**
		 * Filters the default list of hidden columns.
		 *
		 * @since 4.4.0
		 *
		 * @param string[]  $hidden Array of IDs of columns hidden by default.
		 * @param WP_Screen $screen WP_Screen object of the current screen.
		 */
		$hidden = apply_filters( &#039;default_hidden_columns&#039;, $hidden, $screen );
	}

	/**
	 * Filters the list of hidden columns.
	 *
	 * @since 4.4.0
	 * @since 4.4.1 Added the `use_defaults` parameter.
	 *
	 * @param string[]  $hidden       Array of IDs of hidden columns.
	 * @param WP_Screen $screen       WP_Screen object of the current screen.
	 * @param bool      $use_defaults Whether to show the default columns.
	 */
	return apply_filters( &#039;hidden_columns&#039;, $hidden, $screen, $use_defaults );
}

/**
 * Prints the meta box preferences for screen meta.
 *
 * @since 2.7.0
 *
 * @global array $wp_meta_boxes Global meta box state.
 *
 * @param WP_Screen $screen
 */
function meta_box_prefs( $screen ) {
	global $wp_meta_boxes;

	if ( is_string( $screen ) ) {
		$screen = convert_to_screen( $screen );
	}

	if ( empty( $wp_meta_boxes[ $screen-&gt;id ] ) ) {
		return;
	}

	$hidden = get_hidden_meta_boxes( $screen );

	foreach ( array_keys( $wp_meta_boxes[ $screen-&gt;id ] ) as $context ) {
		foreach ( array( &#039;high&#039;, &#039;core&#039;, &#039;default&#039;, &#039;low&#039; ) as $priority ) {
			if ( ! isset( $wp_meta_boxes[ $screen-&gt;id ][ $context ][ $priority ] ) ) {
				continue;
			}

			foreach ( $wp_meta_boxes[ $screen-&gt;id ][ $context ][ $priority ] as $box ) {
				if ( false === $box || ! $box[&#039;title&#039;] ) {
					continue;
				}

				// Submit box cannot be hidden.
				if ( &#039;submitdiv&#039; === $box[&#039;id&#039;] || &#039;linksubmitdiv&#039; === $box[&#039;id&#039;] ) {
					continue;
				}

				$widget_title = $box[&#039;title&#039;];

				if ( is_array( $box[&#039;args&#039;] ) &amp;&amp; isset( $box[&#039;args&#039;][&#039;__widget_basename&#039;] ) ) {
					$widget_title = $box[&#039;args&#039;][&#039;__widget_basename&#039;];
				}

				$is_hidden = in_array( $box[&#039;id&#039;], $hidden, true );

				printf(
					&#039;&lt;label for=&quot;%1$s-hide&quot;&gt;&lt;input class=&quot;hide-postbox-tog&quot; name=&quot;%1$s-hide&quot; type=&quot;checkbox&quot; id=&quot;%1$s-hide&quot; value=&quot;%1$s&quot; %2$s /&gt;%3$s&lt;/label&gt;&#039;,
					esc_attr( $box[&#039;id&#039;] ),
					checked( $is_hidden, false, false ),
					$widget_title
				);
			}
		}
	}
}

/**
 * Gets an array of IDs of hidden meta boxes.
 *
 * @since 2.7.0
 *
 * @param string|WP_Screen $screen Screen identifier
 * @return string[] IDs of hidden meta boxes.
 */
function get_hidden_meta_boxes( $screen ) {
	if ( is_string( $screen ) ) {
		$screen = convert_to_screen( $screen );
	}

	$hidden = get_user_option( &quot;metaboxhidden_{$screen-&gt;id}&quot; );

	$use_defaults = ! is_array( $hidden );

	// Hide slug boxes by default.
	if ( $use_defaults ) {
		$hidden = array();

		if ( &#039;post&#039; === $screen-&gt;base ) {
			if ( in_array( $screen-&gt;post_type, array( &#039;post&#039;, &#039;page&#039;, &#039;attachment&#039; ), true ) ) {
				$hidden = array( &#039;slugdiv&#039;, &#039;trackbacksdiv&#039;, &#039;postcustom&#039;, &#039;postexcerpt&#039;, &#039;commentstatusdiv&#039;, &#039;commentsdiv&#039;, &#039;authordiv&#039;, &#039;revisionsdiv&#039; );
			} else {
				$hidden = array( &#039;slugdiv&#039; );
			}
		}

		/**
		 * Filters the default list of hidden meta boxes.
		 *
		 * @since 3.1.0
		 *
		 * @param string[]  $hidden An array of IDs of meta boxes hidden by default.
		 * @param WP_Screen $screen WP_Screen object of the current screen.
		 */
		$hidden = apply_filters( &#039;default_hidden_meta_boxes&#039;, $hidden, $screen );
	}

	/**
	 * Filters the list of hidden meta boxes.
	 *
	 * @since 3.3.0
	 *
	 * @param string[]  $hidden       An array of IDs of hidden meta boxes.
	 * @param WP_Screen $screen       WP_Screen object of the current screen.
	 * @param bool      $use_defaults Whether to show the default meta boxes.
	 *                                Default true.
	 */
	return apply_filters( &#039;hidden_meta_boxes&#039;, $hidden, $screen, $use_defaults );
}

/**
 * Register and configure an admin screen option
 *
 * @since 3.1.0
 *
 * @param string $option An option name.
 * @param mixed  $args   Option-dependent arguments.
 */
function add_screen_option( $option, $args = array() ) {
	$current_screen = get_current_screen();

	if ( ! $current_screen ) {
		return;
	}

	$current_screen-&gt;add_option( $option, $args );
}

/**
 * Get the current screen object
 *
 * @since 3.1.0
 *
 * @global WP_Screen $current_screen WordPress current screen object.
 *
 * @return WP_Screen|null Current screen object or null when screen not defined.
 */
function get_current_screen() {
	global $current_screen;

	if ( ! $current_screen instanceof WP_Screen ) {
		return null;
	}

	return $current_screen;
}

/**
 * Set the current screen object
 *
 * @since 3.0.0
 *
 * @param string|WP_Screen $hook_name Optional. The hook name (also known as the hook suffix) used to determine the screen,
 *                                    or an existing screen object.
 */
function set_current_screen( $hook_name = &#039;&#039; ) {
	WP_Screen::get( $hook_name )-&gt;set_current_screen();
}
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