3v4l.org

run code in 300+ PHP versions simultaneously
<?php $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[1]);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
result=1 $matches=<a href=%http://link1%><img></a><a href=%http://link2%><img></a><a href=%http://link3%><img></a>
preferences:
192.44 ms | 406 KiB | 356 Q