3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $tweet = "hello world #dontremoveme foobar http://example.com/#dontremoveme #remove #removeme #removeüäüö"; $res = preg_replace("/ #\p{L}+\b(?!\s+\p{L})/u", '', $tweet); echo $res,"\n";
Output for 5.3.4 - 7.2.0
hello world #dontremoveme foobar http://example.com/#dontremoveme
Output for 4.4.0 - 4.4.9, 5.0.5 - 5.3.3
hello world #dontremoveme foobar http://example.com/#dontremovemeüäüö
Output for 4.3.11, 5.0.0 - 5.0.4
Warning: preg_replace(): Compilation failed: PCRE does not support \L, \l, \N, \P, \p, \U, \u, or \X at offset 3 in /in/XrRLq on line 4
Output for 4.3.0 - 4.3.10
Warning: Compilation failed: PCRE does not support \L, \l, \N, \P, \p, \U, \u, or \X at offset 3 in /in/XrRLq on line 4