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run code in 150+ php & hhvm versions
Bugs & Features
<?php preg_match_all("/(?J)((?P<A>a)!|(?P<A>a)=(?P<type>[si])) ((?P<B>b)!|(?P<B>b)=(?P<type>[si]))/", "a! b=s a=i b!", $m, PREG_SET_ORDER); foreach ($m as &$s) { foreach ($s as $k => $v) { if (is_int($k)) { unset($s[$k]); } } } unset($s); print_r($m);
Output for 5.2.0 - 7.1.0
Array ( [0] => Array ( [A] => [type] => s [B] => b ) [1] => Array ( [A] => a [type] => i [B] => b ) )
Output for 5.0.0 - 5.1.6
Warning: preg_match_all(): Compilation failed: unrecognized character after (? at offset 2 in /in/1M7BO on line 2 Array ( )
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '&', expecting T_VARIABLE or '$' in /in/1M7BO on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected '&', expecting T_VARIABLE or '$' in /in/1M7BO on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/1M7BO on line 4
Process exited with code 255.