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<?php $strings = ['pag=0', '..page=1', 'page=0', 'shmage-page=1', 'test']; foreach ($strings as $string) { $matches = []; if (preg_match('/page=1/', $string, $matches) === 1) { var_dump($matches); } }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 2, Position 2 = 15
Branch analysis from position: 2
2 jumps found. (Code = 78) Position 1 = 3, Position 2 = 15
Branch analysis from position: 3
2 jumps found. (Code = 43) Position 1 = 11, Position 2 = 14
Branch analysis from position: 11
1 jumps found. (Code = 42) Position 1 = 2
Branch analysis from position: 2
Branch analysis from position: 14
Branch analysis from position: 15
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 15
filename:       /in/rR1LZ
function name:  (null)
number of ops:  17
compiled vars:  !0 = $strings, !1 = $string, !2 = $matches
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    4     1      > FE_RESET_R                                       $4      !0, ->15
          2    > > FE_FETCH_R                                               $4, !1, ->15
    5     3    >   ASSIGN                                                   !2, <array>
    6     4        INIT_FCALL                                               'preg_match'
          5        SEND_VAL                                                 '%2Fpage%3D1%2F'
          6        SEND_VAR                                                 !1
          7        SEND_REF                                                 !2
          8        DO_ICALL                                         $6      
          9        IS_IDENTICAL                                             $6, 1
         10      > JMPZ                                                     ~7, ->14
    7    11    >   INIT_FCALL                                               'var_dump'
         12        SEND_VAR                                                 !2
         13        DO_ICALL                                                 
    4    14    > > JMP                                                      ->2
         15    >   FE_FREE                                                  $4
    9    16      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
154.27 ms | 1395 KiB | 17 Q