Question

wp_extract_urls( string $content )

Use RegEx to extract URLs from arbitrary content.

---

description

---

参数

$content

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

---

返回值

(array) URLs found in passed string.

---

源代码

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 );
}

---

更新日志

Version	description
3.7.0	Introduced.

---

相关函数

Used By

• wp-includes/functions.php: do_enclose()
• wp-includes/comment.php: pingback()

---

User Contributed Notes

1. Skip to note content You must log in to vote on the helpfulness of this noteVote results for this note: 0You must log in to vote on the helpfulness of this note 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' )