3v4l.org

run code in 300+ PHP versions simultaneously
<?php class C implements ArrayAccess { public $data = array( "foo"=>"bar" ); public function offsetExists ( $offset ): bool{ return array_key_exists((string)$offset,$this->data); } public function offsetGet ( mixed $offset ){ return $this->data[$offset]; } public function offsetSet ( $offset , $value ): void { $this->data[$offset]=$value; } public function offsetUnset ( $offset ): void { unset($this->data[$offset]); } } $o=new C(); if(array_key_exists('foo',$o)){ echo "ArrayAccess seems to work"; }else{ echo "ArrayAccess seems broken"; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 6, Position 2 = 8
Branch analysis from position: 6
1 jumps found. (Code = 42) Position 1 = 9
Branch analysis from position: 9
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 8
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/TcNR4
function name:  (null)
number of ops:  10
compiled vars:  !0 = $o
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   DECLARE_CLASS                                            'c'
   22     1        NEW                                              $1      'C'
          2        DO_FCALL                                      0          
          3        ASSIGN                                                   !0, $1
   24     4        ARRAY_KEY_EXISTS                                         'foo', !0
          5      > JMPZ                                                     ~4, ->8
   25     6    >   ECHO                                                     'ArrayAccess+seems+to+work'
          7      > JMP                                                      ->9
   27     8    >   ECHO                                                     'ArrayAccess+seems+broken'
   28     9    > > RETURN                                                   1

Class C:
Function offsetexists:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/TcNR4
function name:  offsetExists
number of ops:  8
compiled vars:  !0 = $offset
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    7     0  E >   RECV                                             !0      
    8     1        CAST                                          6  ~1      !0
          2        FETCH_OBJ_R                                      ~2      'data'
          3        ARRAY_KEY_EXISTS                                 ~3      ~1, ~2
          4        VERIFY_RETURN_TYPE                                       ~3
          5      > RETURN                                                   ~3
    9     6*       VERIFY_RETURN_TYPE                                       
          7*     > RETURN                                                   null

End of function offsetexists

Function offsetget:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/TcNR4
function name:  offsetGet
number of ops:  5
compiled vars:  !0 = $offset
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   10     0  E >   RECV                                             !0      
   11     1        FETCH_OBJ_R                                      ~1      'data'
          2        FETCH_DIM_R                                      ~2      ~1, !0
          3      > RETURN                                                   ~2
   12     4*     > RETURN                                                   null

End of function offsetget

Function offsetset:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/TcNR4
function name:  offsetSet
number of ops:  6
compiled vars:  !0 = $offset, !1 = $value
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   13     0  E >   RECV                                             !0      
          1        RECV                                             !1      
   14     2        FETCH_OBJ_W                                      $2      'data'
          3        ASSIGN_DIM                                               $2, !0
          4        OP_DATA                                                  !1
   15     5      > RETURN                                                   null

End of function offsetset

Function offsetunset:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/TcNR4
function name:  offsetUnset
number of ops:  4
compiled vars:  !0 = $offset
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   16     0  E >   RECV                                             !0      
   17     1        FETCH_OBJ_UNSET                                  $1      'data'
          2        UNSET_DIM                                                $1, !0
   18     3      > RETURN                                                   null

End of function offsetunset

End of class C.

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
169.15 ms | 1403 KiB | 13 Q