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<?php $a = new ArrayObject(); $a->offsetSet('null', null); var_dump($a->offsetExists('null'));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/afTL9
function name:  (null)
number of ops:  14
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   NEW                                              $1      'ArrayObject'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $1
    4     3        INIT_METHOD_CALL                                         !0, 'offsetSet'
          4        SEND_VAL_EX                                              'null'
          5        SEND_VAL_EX                                              null
          6        DO_FCALL                                      0          
    5     7        INIT_FCALL                                               'var_dump'
          8        INIT_METHOD_CALL                                         !0, 'offsetExists'
          9        SEND_VAL_EX                                              'null'
         10        DO_FCALL                                      0  $5      
         11        SEND_VAR                                                 $5
         12        DO_ICALL                                                 
         13      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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