3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $start = '@'; $end = '@'; $text = 'newtext!234@@random_text@@weludud'; $replace = 'test'; $msg = preg_replace('#('.$start.')(.*)('.$end.')#si', "$1$replace$3", $text); echo $msg;
based on vK2od
Output for 4.3.0 - 5.6.21, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
newtext!234@test@weludud