3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php // 1. Identify the block of <a> elements $string = '<div><a href=%http://link1%><img></a><a href=%http://link2%><img></a><a href=%http://link3%><img></a></div>'; $re = '|<div>((<a((?!href)(?!<).)+?href=%([^%]+?)%((?!</a>).)+?</a>){3})</div>|'; $matches = array(); echo('result='.intval(preg_match($re, $string, $matches))."\n"); echo('$matches='); print_r($matches); // 2. Extract the URLs $re = '|<a((?!href)(?!<).)+?href=%([^%]+?)%((?!</a>).)+?</a>|'; $URLs = array(); preg_match_all($re, $matches[1], $URLs); echo('URLs='); print_r($URLs[2]);
based on K4mLR
Output for 4.3.0 - 7.2.0
result=1 $matches=Array ( [0] => <div><a href=%http://link1%><img></a><a href=%http://link2%><img></a><a href=%http://link3%><img></a></div> [1] => <a href=%http://link1%><img></a><a href=%http://link2%><img></a><a href=%http://link3%><img></a> [2] => <a href=%http://link3%><img></a> [3] => [4] => http://link3 [5] => > ) URLs=Array ( [0] => http://link1 [1] => http://link2 [2] => http://link3 )