3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $line="This is the first test.{@font-face:Garamond}"; preg_match("/(?<![\]\\]{1}){([\w\s\\@:=\'\"-\.;^}]*)}/", $line, $array); var_dump($array);
based on mlBJP
Output for 5.2.0 - 7.2.0
Warning: preg_match(): Compilation failed: lookbehind assertion is not fixed length at offset 35 in /in/r39Og on line 3 NULL
Output for 4.3.11 - 5.1.6
Warning: preg_match(): Compilation failed: lookbehind assertion is not fixed length at offset 35 in /in/r39Og on line 3 array(0) { }
Output for 4.3.0 - 4.3.10
Warning: Compilation failed: lookbehind assertion is not fixed length at offset 35 in /in/r39Og on line 3 array(0) { }