wp_extract_urls() WP 1.0

Use RegEx to extract URLs from arbitrary content.

No Hooks.

Return

String[]. Array of URLs found in passed string.

Usage

wp_extract_urls( $content );

$content(string) (required)

Content to extract URLs from.

Changelog

Code of wp extract urls: wp-includes/functions.php ^{WP 5.4.1}

<?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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