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<?php $a = []; $a[] = &$a; preg_grep('/abc/', $a); var_dump($a); ?>
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/QdmMl
function name:  (null)
number of ops:  11
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    3     1        FETCH_DIM_W                                      $2      !0
          2        ASSIGN_REF                                               $2, !0
    4     3        INIT_FCALL                                               'preg_grep'
          4        SEND_VAL                                                 '%2Fabc%2F'
          5        SEND_VAR                                                 !0
          6        DO_ICALL                                                 
    5     7        INIT_FCALL                                               'var_dump'
          8        SEND_VAR                                                 !0
          9        DO_ICALL                                                 
    6    10      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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