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<?php var_dump('list'); $a = ['foo']; var_dump(json_encode($a)); unset($a[0]); var_dump(json_encode($a)); var_dump('dict'); $a = ['bar' => 'foo']; var_dump(json_encode($a)); unset($a['bar']); var_dump(json_encode($a));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/42qO0
function name:  (null)
number of ops:  35
compiled vars:  !0 = $a
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                                   'var_dump'
          1        SEND_VAL                                                     'list'
          2        DO_ICALL                                                     
    4     3        ASSIGN                                                       !0, <array>
    5     4        INIT_FCALL                                                   'var_dump'
          5        INIT_FCALL                                                   'json_encode'
          6        SEND_VAR                                                     !0
          7        DO_ICALL                                             $3      
          8        SEND_VAR                                                     $3
          9        DO_ICALL                                                     
    6    10        UNSET_DIM                                                    !0, 0
    7    11        INIT_FCALL                                                   'var_dump'
         12        INIT_FCALL                                                   'json_encode'
         13        SEND_VAR                                                     !0
         14        DO_ICALL                                             $5      
         15        SEND_VAR                                                     $5
         16        DO_ICALL                                                     
    9    17        INIT_FCALL                                                   'var_dump'
         18        SEND_VAL                                                     'dict'
         19        DO_ICALL                                                     
   10    20        ASSIGN                                                       !0, <array>
   11    21        INIT_FCALL                                                   'var_dump'
         22        INIT_FCALL                                                   'json_encode'
         23        SEND_VAR                                                     !0
         24        DO_ICALL                                             $9      
         25        SEND_VAR                                                     $9
         26        DO_ICALL                                                     
   12    27        UNSET_DIM                                                    !0, 'bar'
   13    28        INIT_FCALL                                                   'var_dump'
         29        INIT_FCALL                                                   'json_encode'
         30        SEND_VAR                                                     !0
         31        DO_ICALL                                             $11     
         32        SEND_VAR                                                     $11
         33        DO_ICALL                                                     
         34      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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