3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $haystack = '12341234'; $needle = '23'; $start = strpos($haystack , $needle); $needleLen = strlen($needle); echo substr_replace ( $haystack , '', $start , $needleLen );
Output for 4.3.0 - 5.6.21, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
141234