3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = '<li data-type="mentionable" data-id="2">bla bla... <li data-type="mentionable" data-id="812">some test <li>bla bla </li>more text <li data-type="mentionable" data-id="282">'; preg_match_all("/data-id=\"(\d+)\"/", $str, $matches); print_r($matches);
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 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
Array ( [0] => Array ( [0] => data-id="2" [1] => data-id="812" [2] => data-id="282" ) [1] => Array ( [0] => 2 [1] => 812 [2] => 282 ) )
preferences:
232.77 ms | 404 KiB | 293 Q