3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $whitespace = "\x09\x0b"; $string = "hi".$whitespace."bob : letter v"; echo $string . "\n"; echo preg_replace('/\s\s+|\\f|\\n|\\r|\\t|\x0b/', '', $string);
Output for 4.3.0 - 7.1.0
hi bob : letter v hibob : letter v