3v4l.org

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[$2].")", $pattern);
Output for 5.4.0 - 5.4.23
Parse error: syntax error, unexpected '2' (T_LNUMBER), expecting variable (T_VARIABLE) or '$' in /in/1KVd7 on line 13
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected '[' in /in/1KVd7 on line 3
Process exited with code 255.