3v4l.org

run code in 300+ PHP versions simultaneously
<?php $s = '<iframe ><embed boowidth=222>fdgwidth=700dfg</embed>sfsdfsdf</iframe>'; $matches = array(); var_dump( preg_replace('~(.*<[^>]+\swidth=["\']?)(\d+)(["\']?[^>]*>.*)~', '${1}---${3}', $s) ); var_dump($matshes);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(69) "<iframe ><embed boowidth=222>fdgwidth=700dfg</embed>sfsdfsdf</iframe>" Warning: Undefined variable $matshes in /in/0qaAS on line 5 NULL
Output for 5.0.4 - 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 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
string(69) "<iframe ><embed boowidth=222>fdgwidth=700dfg</embed>sfsdfsdf</iframe>" Notice: Undefined variable: matshes in /in/0qaAS on line 5 NULL
Output for 7.3.32 - 7.3.33
string(69) "<iframe ><embed boowidth=222>fdgwidth=700dfg</embed>sfsdfsdf</iframe>" NULL
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.3
string(69) "<iframe ><embed boowidth=222>fdgwidth=700dfg</embed>sfsdfsdf</iframe>" Notice: Undefined variable: matshes in /in/0qaAS on line 5 NULL
preferences:
292.37 ms | 402 KiB | 455 Q