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<?php $a = []; $a[] = $a; echo "\na: ".serialize($a); $b = []; $b[] =& $b; echo "\nb: ".serialize($b); $c = new stdClass(); $c->c = $c; echo "\nc: ".serialize($c); $d = new stdClass(); $d->c =& $d; echo "\nd: ".serialize($d); $e = new stdClass(); $e->e = clone $e; echo "\ne: ".serialize($e);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Z3Img
function name:  (null)
number of ops:  49
compiled vars:  !0 = $a, !1 = $b, !2 = $c, !3 = $d, !4 = $e
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    4     1        QM_ASSIGN                                        ~7      !0
          2        ASSIGN_DIM                                               !0
          3        OP_DATA                                                  ~7
    5     4        INIT_FCALL                                               'serialize'
          5        SEND_VAR                                                 !0
          6        DO_ICALL                                         $8      
          7        CONCAT                                           ~9      '%0Aa%3A+', $8
          8        ECHO                                                     ~9
    7     9        ASSIGN                                                   !1, <array>
    8    10        FETCH_DIM_W                                      $11     !1
         11        ASSIGN_REF                                               $11, !1
    9    12        INIT_FCALL                                               'serialize'
         13        SEND_VAR                                                 !1
         14        DO_ICALL                                         $13     
         15        CONCAT                                           ~14     '%0Ab%3A+', $13
         16        ECHO                                                     ~14
   11    17        NEW                                              $15     'stdClass'
         18        DO_FCALL                                      0          
         19        ASSIGN                                                   !2, $15
   12    20        ASSIGN_OBJ                                               !2, 'c'
         21        OP_DATA                                                  !2
   13    22        INIT_FCALL                                               'serialize'
         23        SEND_VAR                                                 !2
         24        DO_ICALL                                         $19     
         25        CONCAT                                           ~20     '%0Ac%3A+', $19
         26        ECHO                                                     ~20
   15    27        NEW                                              $21     'stdClass'
         28        DO_FCALL                                      0          
         29        ASSIGN                                                   !3, $21
   16    30        ASSIGN_OBJ_REF                                           !3, 'c'
         31        OP_DATA                                                  !3
   17    32        INIT_FCALL                                               'serialize'
         33        SEND_VAR                                                 !3
         34        DO_ICALL                                         $25     
         35        CONCAT                                           ~26     '%0Ad%3A+', $25
         36        ECHO                                                     ~26
   19    37        NEW                                              $27     'stdClass'
         38        DO_FCALL                                      0          
         39        ASSIGN                                                   !4, $27
   20    40        CLONE                                            ~31     !4
         41        ASSIGN_OBJ                                               !4, 'e'
         42        OP_DATA                                                  ~31
   21    43        INIT_FCALL                                               'serialize'
         44        SEND_VAR                                                 !4
         45        DO_ICALL                                         $32     
         46        CONCAT                                           ~33     '%0Ae%3A+', $32
         47        ECHO                                                     ~33
         48      > RETURN                                                   1

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