3v4l.org

run code in 500+ PHP versions simultaneously
<?php $array = array(); $array[ (string) spl_object_hash( new stdClass() ) ] = 'spl_object_hash (WP<7.0)'; $array[ (string) spl_object_id( new stdClass() ) ] = 'spl_object_id (WP 7.1)'; echo "\n"; var_dump( $array ); echo "Keys:\n"; var_dump( array_keys( $array ) );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/RXD9o
function name:  (null)
number of ops:  29
compiled vars:  !0 = $array
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, <array>
    5     1        INIT_FCALL                                                   'spl_object_hash'
          2        NEW                                                  $2      'stdClass'
          3        DO_FCALL                                          0          
          4        SEND_VAR                                                     $2
          5        DO_ICALL                                             $4      
          6        CAST                                              6  ~5      $4
          7        ASSIGN_DIM                                                   !0, ~5
          8        OP_DATA                                                      'spl_object_hash+%28WP%3C7.0%29'
    6     9        INIT_FCALL                                                   'spl_object_id'
         10        NEW                                                  $7      'stdClass'
         11        DO_FCALL                                          0          
         12        SEND_VAR                                                     $7
         13        DO_ICALL                                             $9      
         14        CAST                                              6  ~10     $9
         15        ASSIGN_DIM                                                   !0, ~10
         16        OP_DATA                                                      'spl_object_id+%28WP+7.1%29'
    8    17        ECHO                                                         '%0A'
    9    18        INIT_FCALL                                                   'var_dump'
         19        SEND_VAR                                                     !0
         20        DO_ICALL                                                     
   11    21        ECHO                                                         'Keys%3A%0A'
   12    22        INIT_FCALL                                                   'var_dump'
         23        INIT_FCALL                                                   'array_keys'
         24        SEND_VAR                                                     !0
         25        DO_ICALL                                             $13     
         26        SEND_VAR                                                     $13
         27        DO_ICALL                                                     
         28      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


preferences:
144.51 ms | 2850 KiB | 12 Q