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<?php $test = array(); array_push($test[0],0); echo $test[0]; ?>
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Q2UBq
function name:  (null)
number of ops:  9
compiled vars:  !0 = $test
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    3     1        INIT_FCALL                                               'array_push'
          2        FETCH_DIM_W                                      $2      !0, 0
          3        SEND_REF                                                 $2
          4        SEND_VAL                                                 0
          5        DO_ICALL                                                 
    4     6        FETCH_DIM_R                                      ~4      !0, 0
          7        ECHO                                                     ~4
    5     8      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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