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<?php $array = [ 'foo' => 1, //'show_me_120' => 'something', 'bar' => 42, ]; $showMeNumber = null; foreach ($array as $k => $v) { if (sscanf($k, 'show_me_%d',$showMeNumber)) { break; } } var_export($showMeNumber);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 3, Position 2 = 13
Branch analysis from position: 3
2 jumps found. (Code = 78) Position 1 = 4, Position 2 = 13
Branch analysis from position: 4
2 jumps found. (Code = 43) Position 1 = 11, Position 2 = 12
Branch analysis from position: 11
1 jumps found. (Code = 42) Position 1 = 13
Branch analysis from position: 13
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 12
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 13
Branch analysis from position: 13
filename:       /in/S3BZf
function name:  (null)
number of ops:  18
compiled vars:  !0 = $array, !1 = $showMeNumber, !2 = $v, !3 = $k
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    9     1        ASSIGN                                                   !1, null
   10     2      > FE_RESET_R                                       $6      !0, ->13
          3    > > FE_FETCH_R                                       ~7      $6, !2, ->13
          4    >   ASSIGN                                                   !3, ~7
   11     5        INIT_FCALL                                               'sscanf'
          6        SEND_VAR                                                 !3
          7        SEND_VAL                                                 'show_me_%25d'
          8        SEND_REF                                                 !1
          9        DO_ICALL                                         $9      
         10      > JMPZ                                                     $9, ->12
   12    11    > > JMP                                                      ->13
   10    12    > > JMP                                                      ->3
         13    >   FE_FREE                                                  $6
   15    14        INIT_FCALL                                               'var_export'
         15        SEND_VAR                                                 !1
         16        DO_ICALL                                                 
         17      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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