class-embed-link-builder.php

<?php
new Embed_Link_Builder();

/**
 * Class Name: Embed_Link Builder
 *@author @ottanxyz
 */
class Embed_Link_Builder {

	function __construct() {
		wp_embed_register_handler(
			'external_link_builder',
			'/^(https?:\\/\\/.*)$/i',
			array( &$this, 'handler' )
		);
		add_shortcode( 'embed_links', array( &$this, 'display' ) );
	}

	public function handler( $matches, $attr, $url, $rawattr ) {
		$args = preg_split( '/#/', $matches[1] );
		return "[embed_links url=\"{$args[0]}\"]";
	}

	public function display( $p ) {
		if ( ! isset( $p['url'] ) || ! $p['url'] ) {
			return;
		}

		return '<a class="embedly-card" href="' . $p['url'] . '">' . $p['url'] . '</a>';
	}
}
?>