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run code in 150+ php & hhvm versions
Bugs & Features
<?php $type = "abc * def"; var_dump(preg_match_all('/[([a-Z]+)(\s[\+\*]\s)?]/', $type, $m)); var_dump($m);
Output for 5.2.0 - 5.6.28, 7.0.0 - 7.1.0
Warning: preg_match_all(): Compilation failed: range out of order in character class at offset 5 in /in/qKgIv on line 3 bool(false) NULL
Output for hhvm-3.10.0 - 3.12.0
Warning: Compilation failed: range out of order in character class at offset 5 in /in/qKgIv on line 3 bool(false) NULL
Output for 4.3.11 - 5.1.6
Warning: preg_match_all(): Compilation failed: range out of order in character class at offset 5 in /in/qKgIv on line 3 bool(false) array(0) { }
Output for 4.3.0 - 4.3.10
Warning: Compilation failed: range out of order in character class at offset 5 in /in/qKgIv on line 3 bool(false) array(0) { }