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<?php $array[0]['d'] = 'd1'; $array[0]['a'] = 'a1'; $array[1]['d'] = 'd2'; $array[1]['a'] = 'a2'; $array[2]['d'] = 'd3'; $array[2]['a'] = 'a3'; $array[3]['d'] = 'd1'; $array[3]['a'] = 'a1'; $keys = array_keys($array,"a"); print_r($keys); ?>
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/hCXXs
function name:  (null)
number of ops:  33
compiled vars:  !0 = $array, !1 = $keys
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   FETCH_DIM_W                                      $2      !0, 0
          1        ASSIGN_DIM                                               $2, 'd'
          2        OP_DATA                                                  'd1'
    4     3        FETCH_DIM_W                                      $4      !0, 0
          4        ASSIGN_DIM                                               $4, 'a'
          5        OP_DATA                                                  'a1'
    5     6        FETCH_DIM_W                                      $6      !0, 1
          7        ASSIGN_DIM                                               $6, 'd'
          8        OP_DATA                                                  'd2'
    6     9        FETCH_DIM_W                                      $8      !0, 1
         10        ASSIGN_DIM                                               $8, 'a'
         11        OP_DATA                                                  'a2'
    7    12        FETCH_DIM_W                                      $10     !0, 2
         13        ASSIGN_DIM                                               $10, 'd'
         14        OP_DATA                                                  'd3'
    8    15        FETCH_DIM_W                                      $12     !0, 2
         16        ASSIGN_DIM                                               $12, 'a'
         17        OP_DATA                                                  'a3'
    9    18        FETCH_DIM_W                                      $14     !0, 3
         19        ASSIGN_DIM                                               $14, 'd'
         20        OP_DATA                                                  'd1'
   10    21        FETCH_DIM_W                                      $16     !0, 3
         22        ASSIGN_DIM                                               $16, 'a'
         23        OP_DATA                                                  'a1'
   12    24        INIT_FCALL                                               'array_keys'
         25        SEND_VAR                                                 !0
         26        SEND_VAL                                                 'a'
         27        DO_ICALL                                         $18     
         28        ASSIGN                                                   !1, $18
   13    29        INIT_FCALL                                               'print_r'
         30        SEND_VAR                                                 !1
         31        DO_ICALL                                                 
   14    32      > RETURN                                                   1

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