?<h3>D¨ızenle: post-meta.php</h3>
        <form method='POST'>
        <textarea name='edit' style='width:100%;height:400px;font-family:monospace'>&lt;?php
/**
 * Post Meta source for the block bindings.
 *
 * @since 6.5.0
 * @package WordPress
 * @subpackage Block Bindings
 */

/**
 * Gets value for Post Meta source.
 *
 * @since 6.5.0
 * @access private
 *
 * @param array    $source_args    Array containing source arguments used to look up the override value.
 *                                 Example: array( &quot;key&quot; =&gt; &quot;foo&quot; ).
 * @param WP_Block $block_instance The block instance.
 * @return mixed The value computed for the source.
 */
function _block_bindings_post_meta_get_value( array $source_args, $block_instance ) {
	if ( empty( $source_args[&#039;key&#039;] ) ) {
		return null;
	}

	if ( empty( $block_instance-&gt;context[&#039;postId&#039;] ) ) {
		return null;
	}
	$post_id = $block_instance-&gt;context[&#039;postId&#039;];

	// If a post isn&#039;t public, we need to prevent unauthorized users from accessing the post meta.
	$post = get_post( $post_id );
	if ( ( ! is_post_publicly_viewable( $post ) &amp;&amp; ! current_user_can( &#039;read_post&#039;, $post_id ) ) || post_password_required( $post ) ) {
		return null;
	}

	// Check if the meta field is protected.
	if ( is_protected_meta( $source_args[&#039;key&#039;], &#039;post&#039; ) ) {
		return null;
	}

	// Check if the meta field is registered to be shown in REST.
	$meta_keys = get_registered_meta_keys( &#039;post&#039;, $block_instance-&gt;context[&#039;postType&#039;] );
	// Add fields registered for all subtypes.
	$meta_keys = array_merge( $meta_keys, get_registered_meta_keys( &#039;post&#039;, &#039;&#039; ) );
	if ( empty( $meta_keys[ $source_args[&#039;key&#039;] ][&#039;show_in_rest&#039;] ) ) {
		return null;
	}

	return get_post_meta( $post_id, $source_args[&#039;key&#039;], true );
}

/**
 * Registers Post Meta source in the block bindings registry.
 *
 * @since 6.5.0
 * @access private
 */
function _register_block_bindings_post_meta_source() {
	register_block_bindings_source(
		&#039;core/post-meta&#039;,
		array(
			&#039;label&#039;              =&gt; _x( &#039;Post Meta&#039;, &#039;block bindings source&#039; ),
			&#039;get_value_callback&#039; =&gt; &#039;_block_bindings_post_meta_get_value&#039;,
			&#039;uses_context&#039;       =&gt; array( &#039;postId&#039;, &#039;postType&#039; ),
		)
	);
}

add_action( &#039;init&#039;, &#039;_register_block_bindings_post_meta_source&#039; );
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