3v4l.org

run code in 300+ PHP versions simultaneously
<?php $test = "case ( 'this_is__test_innit'):"; if (!preg_match('/case[\s]*?\([\s]*?[\'|\"]/', $test)) { print 'no match'; } else { print 'match'; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 7, Position 2 = 9
Branch analysis from position: 7
1 jumps found. (Code = 42) Position 1 = 10
Branch analysis from position: 10
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 9
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/sHVaM
function name:  (null)
number of ops:  11
compiled vars:  !0 = $test
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 'case+++%28+++%27this_is__test_innit%27%29%3A'
    5     1        INIT_FCALL                                               'preg_match'
          2        SEND_VAL                                                 '%2Fcase%5B%5Cs%5D%2A%3F%5C%28%5B%5Cs%5D%2A%3F%5B%27%7C%5C%22%5D%2F'
          3        SEND_VAR                                                 !0
          4        DO_ICALL                                         $2      
          5        BOOL_NOT                                         ~3      $2
          6      > JMPZ                                                     ~3, ->9
    6     7    >   ECHO                                                     'no+match'
          8      > JMP                                                      ->10
    8     9    >   ECHO                                                     'match'
    9    10    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
157.89 ms | 1394 KiB | 15 Q