3v4l.org

run code in 300+ PHP versions simultaneously
<?php $names = ['[foo]bar', 'baz', '[blarg]blah']; foreach($names as $name) { preg_match('/^(\[.*?\])?(.*?)$/', $name, $match); var_dump($match); }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 2, Position 2 = 12
Branch analysis from position: 2
2 jumps found. (Code = 78) Position 1 = 3, Position 2 = 12
Branch analysis from position: 3
1 jumps found. (Code = 42) Position 1 = 2
Branch analysis from position: 2
Branch analysis from position: 12
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 12
filename:       /in/OYe9O
function name:  (null)
number of ops:  14
compiled vars:  !0 = $names, !1 = $name, !2 = $match
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    5     1      > FE_RESET_R                                       $4      !0, ->12
          2    > > FE_FETCH_R                                               $4, !1, ->12
    7     3    >   INIT_FCALL                                               'preg_match'
          4        SEND_VAL                                                 '%2F%5E%28%5C%5B.%2A%3F%5C%5D%29%3F%28.%2A%3F%29%24%2F'
          5        SEND_VAR                                                 !1
          6        SEND_REF                                                 !2
          7        DO_ICALL                                                 
    8     8        INIT_FCALL                                               'var_dump'
          9        SEND_VAR                                                 !2
         10        DO_ICALL                                                 
    5    11      > JMP                                                      ->2
         12    >   FE_FREE                                                  $4
    9    13      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
164.48 ms | 1398 KiB | 17 Q