3v4l.org

run code in 300+ PHP versions simultaneously
<?php $matches=array(); preg_match('/([0-9]{3})-?[0-9]{4}/','(234)-5432',$matches); var_dump($matches);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/ZYLDA
function name:  (null)
number of ops:  10
compiled vars:  !0 = $matches
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    4     1        INIT_FCALL                                               'preg_match'
          2        SEND_VAL                                                 '%2F%28%5B0-9%5D%7B3%7D%29-%3F%5B0-9%5D%7B4%7D%2F'
          3        SEND_VAL                                                 '%28234%29-5432'
          4        SEND_REF                                                 !0
          5        DO_ICALL                                                 
    5     6        INIT_FCALL                                               'var_dump'
          7        SEND_VAR                                                 !0
          8        DO_ICALL                                                 
          9      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
154.95 ms | 1385 KiB | 17 Q