3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo preg_replace('~^[\pZ\pC]+|[\pZ\pC]+$|(?! )[\pZ\pC]~u', '', 'abc def ghi   ').PHP_EOL; echo preg_replace('/^\s+|\s+$|[^\S ]/u', '', 'abc def ghi   ');
Output for 5.5.38, 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
abc defghi abc defghi
preferences:
168.72 ms | 407 KiB | 5 Q