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wp_extract_urls( string $content )

Use RegEx to extract URLs from arbitrary content.

Parameters

$content

(string) (Required) Content to extract URLs from.

Return

(string[]) Array of URLs found in passed string.

Source

File: wp-includes/functions.php 

function wp_extract_urls( $content ) {
	preg_match_all(
		"#([\"']?)("
			. '(?:([\w-]+:)?//?)'
			. '[^\s()<>]+'
			. '[.]'
			. '(?:'
				. '\([\w\d]+\)|'
				. '(?:'
					. "[^`!()\[\]{};:'\".,<>«»“”‘’\s]|"
					. '(?:[:]\d+)?/?'
				. ')+'
			. ')'
		. ")\\1#",
		$content,
		$post_links
	);

	$post_links = array_unique( array_map( 'html_entity_decode', $post_links[2] ) );

	return array_values( $post_links );
}

Used By

Used By Description
wp-includes/functions.php: do_enclose()

Check content for video and audio links to add as enclosures.
wp-includes/comment.php: pingback()

Pings back the links found in a post.

Changelog

Version Description
3.7.0 Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/wp_extract_urls