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_wp_copy_post_meta()

_wp_copy_post_meta( int $source_post_id, int $target_post_id, string $meta_key )

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Copy post meta for the given key from one post to another.

Parameters

$source_post_idintrequired
Post ID to copy meta value(s) from.
$target_post_idintrequired
Post ID to copy meta value(s) to.
$meta_keystringrequired
Meta key to copy.

Source

function _wp_copy_post_meta( $source_post_id, $target_post_id, $meta_key ) {

	foreach ( get_post_meta( $source_post_id, $meta_key ) as $meta_value ) {
		/**
		 * We use add_metadata() function vs add_post_meta() here
		 * to allow for a revision post target OR regular post.
		 */
		add_metadata( 'post', $target_post_id, $meta_key, wp_slash( $meta_value ) );
	}
}

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UsesDescription
add_metadata()wp-includes/meta.php

Adds metadata for the specified object.

wp_slash()wp-includes/formatting.php

Adds slashes to a string or recursively adds slashes to strings within an array.

get_post_meta()wp-includes/post.php

Retrieves a post meta field for the given post ID.

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Used byDescription
wp_restore_post_revision_meta()wp-includes/revision.php

Restore the revisioned meta values for a post.

wp_save_revisioned_meta_fields()wp-includes/revision.php

Save the revisioned meta fields.

Changelog

VersionDescription
6.4.0Introduced.

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