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run code in 150+ php & hhvm versions
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<?php preg_match_all("/(?J)(?P<name>[a-z]+)(?|(?P<op>!)|(?P<op>=)(?P<type>[si]))/", "a! b=s c a=i b!", $m, PREG_SET_ORDER); foreach ($m as $s) { foreach ($s as $k => $v) { if (is_int($k)) { unset($s[$k]); } } print_r($s); }
Output for 4.4.9, 5.2.4 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Array ( [name] => a [op] => ! ) Array ( [name] => b [op] => = [type] => s ) Array ( [name] => a [op] => = [type] => i ) Array ( [name] => b [op] => ! )
Output for 5.2.0 - 5.2.3
Warning: preg_match_all(): Compilation failed: unrecognized character after (? at offset 22 in /in/DgWOe on line 2 Warning: Invalid argument supplied for foreach() in /in/DgWOe on line 4
Output for 4.3.11 - 4.4.4, 5.0.0 - 5.1.6
Warning: preg_match_all(): Compilation failed: unrecognized character after (? at offset 2 in /in/DgWOe on line 2
Output for 4.4.5 - 4.4.8
Warning: preg_match_all(): Compilation failed: unrecognized character after (? at offset 22 in /in/DgWOe on line 2
Output for 4.3.0 - 4.3.10
Warning: Compilation failed: unrecognized character after (? at offset 2 in /in/DgWOe on line 2