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run code in 150+ php & hhvm versions
Bugs & Features
<?php $tokens = [ ':rr'=>5, ':tipo'=>'\[A-Z]' ]; $regex = '/#([a-zA-z0-9_]+)(:[a-zA-Z]+)/'; $pattern = '#nombre:tipo'; //echo preg_replace($regex, "(?<$1>".$tokens[(int) ${2}].")", $pattern); echo preg_replace_callback($regex, function (array $matches) use ($params) { var_dump($matches); }, $pattern);
Output for 5.4.0 - 5.6.28, 7.0.0 - 7.1.0
Notice: Undefined variable: params in /in/o56BE on line 17 array(3) { [0]=> string(12) "#nombre:tipo" [1]=> string(6) "nombre" [2]=> string(5) ":tipo" }
Output for hhvm-3.10.0 - 3.12.0
Notice: Undefined variable: params in /in/o56BE on line 19 array(3) { [0]=> string(12) "#nombre:tipo" [1]=> string(6) "nombre" [2]=> string(5) ":tipo" }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/o56BE on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/o56BE on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/o56BE on line 3
Process exited with code 255.