3v4l.org

run code in 300+ PHP versions simultaneously
<?php $re = '/(?:\[[^][]*]|\([^()]*\)|{[^{}]*})(*SKIP)(*F)|[^][(){}]+/m'; $str = 'Hello [123] {45} world (67) Hello There (8) [9] {0}'; $result = preg_replace($re, '', $str); echo $result;
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.27, 8.3.0 - 8.3.15, 8.4.1 - 8.4.2
[123]{45}(67)(8)[9]{0}
preferences:
82.67 ms | 407 KiB | 5 Q