3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php // remove duplicated spaces into single spaces but persist special spaces like the non-breaking-space $normalized = "\xE2\x80\x80\xC2\xA0 "; $normalized = preg_replace("/([ \xC2\xA0])?\\s+/u", '$1 ', $normalized); $normalized = preg_replace('/([ \xC2\xA0]) /u', '$1', $normalized); var_dump($normalized, bin2hex($normalized));
based on VBKSr
Output for 5.3.4 - 7.2.0
string(1) " " string(2) "20"
Output for 4.3.0 - 5.3.3
string(5) "  " string(10) "e28080c2a0"