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<?php $mainArray = array(23 => array(21,23,20), 21 => array(21,23,23), 24 => array(21,23,20)); $newArray = array(); foreach($mainArray as $key => $value) { if (in_array(20, $value)) { $newArray[] = $key; } } echo var_dump($newArray);
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 = 10, Position 2 = 12
Branch analysis from position: 10
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 12
Branch analysis from position: 13
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 13
filename:       /in/gRM2k
function name:  (null)
number of ops:  19
compiled vars:  !0 = $mainArray, !1 = $newArray, !2 = $value, !3 = $key
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    3     1        ASSIGN                                                   !1, <array>
    4     2      > FE_RESET_R                                       $6      !0, ->13
          3    > > FE_FETCH_R                                       ~7      $6, !2, ->13
          4    >   ASSIGN                                                   !3, ~7
    5     5        INIT_FCALL                                               'in_array'
          6        SEND_VAL                                                 20
          7        SEND_VAR                                                 !2
          8        DO_ICALL                                         $9      
          9      > JMPZ                                                     $9, ->12
    6    10    >   ASSIGN_DIM                                               !1
         11        OP_DATA                                                  !3
    4    12    > > JMP                                                      ->3
         13    >   FE_FREE                                                  $6
    9    14        INIT_FCALL                                               'var_dump'
         15        SEND_VAR                                                 !1
         16        DO_ICALL                                         $11     
         17        ECHO                                                     $11
         18      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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