wp_embed_register_handler( string $id, string $regex, callable $callback, int $priority = 10 )

Registers an embed handler.


Should probably only be used for sites that do not support oEmbed.

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$id string Required
An internal ID/name for the handler. Needs to be unique.
$regex string Required
The regex that will be used to see if this handler should be used for a URL.
$callback callable Required
The callback function that will be called if the regex is matched.
$priority int Optional
Used to specify the order in which the registered handlers will be tested.

Default: 10

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File: wp-includes/embed.php. View all references

function wp_embed_register_handler( $id, $regex, $callback, $priority = 10 ) {
	global $wp_embed;
	$wp_embed->register_handler( $id, $regex, $callback, $priority );

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Version Description
2.9.0 Introduced.

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User Contributed Notes

  1. Skip to note 1 content
    Contributed by Codex

    Basic Example

    Register an embed handler for Forbes video embeds.

    function wpdocs_embed_handler_forbes( $matches, $attr, $url, $rawattr ) {
    	$embed = sprintf(
    			'<iframe src="http://www.forbes.com/video/embed/embed.html?show=%1$s&format=frame&height=%2$s&width=%3$s&video=%4$s&mode=render&quot; width="%3$spx" height="%2$spx" frameborder="0" scrolling="no" marginwidth="0" marginheight="0"></iframe>',
    	return $embed;
  2. Skip to note 2 content
    Contributed by cogdog

    Here is a means to add oembed support for web-based audio recorders Vocaroo and Sodaphonic. I found the hard way that sprintf fails when you have a “%” in the string

    add_action( 'init', 'cdb_register_embeds' );
    function dcb_register_embeds() {
    	// handler for vocaroo audio
    	// handler for sodaphonic boombox audio	
    function cdb_handler_vocaroo( $matches, $attr, $url, $rawattr ) {
    $embed = '';
    return $embed;
    function cdb_handler_sodaphonic( $matches, $attr, $url, $rawattr ) {
    $embed = '';
    return $embed;
  3. Skip to note 3 content
    Contributed by Ryan McCue

    Note that the $regex parameter is checked against the URL, not against the content, so you can anchor the regular expression with ^ and $. This is useful if you want to use an ungreedy match group at the end of your URL:

    wp_embed_register_handler( $id, '#^http://example.com/(\?.+)?$#', __NAMESPACE__ . '\\handle_embed' );

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