Test Ted embed plugin

gistfile1.txt

<?php

/*
Plugin Name: Ted Shortcode
Plugin URI: https://kraft.im/
Description: Just for testing.
Author: Kraft
Author URI: https://kraft.im/
Version: 2016.06.15
License: GPL
*/

wp_oembed_add_provider( '!https?://(www\.)?ted.com/talks/view/id/.+!i', 'http://www.ted.com/talks/oembed.json', true );
wp_oembed_add_provider( '!https?://(www\.)?ted.com/talks/[a-zA-Z\-\_]+\.html!i', 'http://www.ted.com/talks/oembed.json', true );

add_shortcode( 'ted', 'shortcode_ted' );
function shortcode_ted( $atts ) {
	global $wp_embed;

	$defaults = array(
		'id'     => '',
	);
	$atts     = shortcode_atts( $defaults, $atts, 'ted' );

	if ( empty( $atts['id'] ) ) {
		return '<!-- Missing TED ID -->';
	}

	$url = '';
	if ( preg_match( '#^[\d]+$#', $atts['id'], $matches ) ) {
		$url = 'http://ted.com/talks/view/id/' . $matches[0];
	} elseif ( preg_match( '#^https?://(www\.)?ted\.com/talks/view/id/[0-9]+$#', $atts['id'], $matches ) ) {
		$url = $matches[0];
	}

	unset( $atts['id'] );

	$args = array();
	$args['width'] = 500;
	$args['height'] = $args['width'] * 0.5625;

	$args['lang'] = 'en';
	add_filter( 'oembed_fetch_url', 'ted_filter_oembed_fetch_url', 10, 3 );
	$retval = $wp_embed->shortcode( $args, $url );
	remove_filter( 'oembed_fetch_url', 'ted_filter_oembed_fetch_url', 10 );

	return $retval;
}

/**
 * Filter the request URL to also include the $lang parameter
 */
function ted_filter_oembed_fetch_url( $provider, $url, $args ) {
	return add_query_arg( 'lang', $args['lang'], $provider );
}