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<?php $array = array(); $obj = new stdClass(); function foo( $foo ) { $foo[0]['key'] = 'value'; $foo[1]->key = 'value'; } foo( array( &$array, $obj ) ); var_dump( $array ); var_dump( $obj );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/TKgIf
function name:  (null)
number of ops:  16
compiled vars:  !0 = $array, !1 = $obj
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, <array>
    4     1        NEW                                                  $3      'stdClass'
          2        DO_FCALL                                          0          
          3        ASSIGN                                                       !1, $3
   11     4        INIT_FCALL                                                   'foo'
          5        INIT_ARRAY                                           ~6      !0
          6        ADD_ARRAY_ELEMENT                                    ~6      !1
          7        SEND_VAL                                                     ~6
          8        DO_FCALL                                          0          
   13     9        INIT_FCALL                                                   'var_dump'
         10        SEND_VAR                                                     !0
         11        DO_ICALL                                                     
   14    12        INIT_FCALL                                                   'var_dump'
         13        SEND_VAR                                                     !1
         14        DO_ICALL                                                     
         15      > RETURN                                                       1

Function foo:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/TKgIf
function name:  foo
number of ops:  8
compiled vars:  !0 = $foo
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    6     0  E >   RECV                                                 !0      
    7     1        FETCH_DIM_W                                          $1      !0, 0
          2        ASSIGN_DIM                                                   $1, 'key'
          3        OP_DATA                                                      'value'
    8     4        FETCH_DIM_W                                          $3      !0, 1
          5        ASSIGN_OBJ                                                   $3, 'key'
          6        OP_DATA                                                      'value'
    9     7      > RETURN                                                       null

End of function foo

Generated using Vulcan Logic Dumper, using php 8.5.0


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