wp_extract_urls( string $content )

Use RegEx to extract URLs from arbitrary content.

Contents

Description Description

Parameters Parameters

$content

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

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Return Return

(array) URLs found in passed string.

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Source 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 );
}

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Changelog Changelog

Changelog
Version Description
3.7.0 Introduced.

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Used By Used By

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.

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User Contributed Notes User Contributed Notes

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    Contributed by Codex —

    Example

    This Code:

    $string = 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin elementum quis lacus in accumsan. Sed sed lacus odio. Sed ullamcorper, nibh et dignissim convallis, lacus tellus pellentesque ipsum, et interdum purus urna ultricies justo. Phasellus blandit eros nec lectus vestibulum consequat. Cras faucibus turpis sed ante commodo cursus. Duis vitae ligula vulputate, varius mi vel, facilisis est. Nulla id mollis ipsum. Nunc faucibus augue vel erat luctus sodales. Curabitur gravida vulputate nulla sed aliquam. Ut posuere mollis mauris, et placerat diam cursus vitae. Vivamus eros arcu, lobortis id sapien at, tempus tristique nunc. Praesent sollicitudin vulputate lorem, vitae vestibulum nisi pretium non. http://example.com is a cool site.';

$urls = wp_extract_urls( $string );

    Will return an array like this:

    array( 0 => 'http://example.com' )

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