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<?php $tmp = 1; $a = new RecursiveArrayIterator(); $a[] = $tmp; echo serialize($a); ?>
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Z6SBF
function name:  (null)
number of ops:  11
compiled vars:  !0 = $tmp, !1 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 1
    5     1        NEW                                              $3      'RecursiveArrayIterator'
          2        DO_FCALL                                      0          
          3        ASSIGN                                                   !1, $3
    6     4        ASSIGN_DIM                                               !1
          5        OP_DATA                                                  !0
    9     6        INIT_FCALL                                               'serialize'
          7        SEND_VAR                                                 !1
          8        DO_ICALL                                         $7      
          9        ECHO                                                     $7
   10    10      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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