3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = new stdClass; $b = $a; $a->foo = 'bar'; var_dump($b); /* Notice at this point, that $a and $b are, * indeed sharing the same object instance. * This is their reference-like behavior at work. */ $a = 'baz'; var_dump($b); /* Notice now, that $b is still that original object. * Had it been an actual reference with $a, * it would have changed to a simple string as well. */ ?>
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Q0VTf
function name:  (null)
number of ops:  14
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   NEW                                              $2      'stdClass'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $2
    3     3        ASSIGN                                                   !1, !0
    4     4        ASSIGN_OBJ                                               !0, 'foo'
          5        OP_DATA                                                  'bar'
    5     6        INIT_FCALL                                               'var_dump'
          7        SEND_VAR                                                 !1
          8        DO_ICALL                                                 
   11     9        ASSIGN                                                   !0, 'baz'
   12    10        INIT_FCALL                                               'var_dump'
         11        SEND_VAR                                                 !1
         12        DO_ICALL                                                 
   18    13      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
159.83 ms | 1394 KiB | 15 Q