3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = 'this i"s a "test" word'; echo preg_replace('/(?<!\s)"(?!\s)/', '', $str);
Output for 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 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
this is a "test" word
preferences:
101.12 ms | 1421 KiB | 4 Q