3v4l.org

run code in 300+ PHP versions simultaneously
<?php $mac = '00:11:22:33:44:55'; $input = '233'; $regex = '('. implode(':*', str_split($input)) .')'; $mac = preg_replace('/'. $regex .'/', '<b>$1</b>', $mac); var_dump($mac);
Output for 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, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 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 - 8.2.18, 8.3.0 - 8.3.6
string(24) "00:11:2<b>2:33</b>:44:55"
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: str_split() in /in/qlZhi on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4
Fatal error: Call to undefined function: str_split() in /in/qlZhi on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: str_split() in /in/qlZhi on line 4
preferences:
242.31 ms | 401 KiB | 313 Q