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<?php $array = array_push(array(),7); echo $array[0];
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/NQjR8
function name:  (null)
number of ops:  8
compiled vars:  !0 = $array
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'array_push'
          1        SEND_VAL_EX                                              <array>
          2        SEND_VAL                                                 7
          3        DO_ICALL                                         $1      
          4        ASSIGN                                                   !0, $1
    4     5        FETCH_DIM_R                                      ~3      !0, 0
          6        ECHO                                                     ~3
          7      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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