3v4l.org

run code in 500+ PHP versions simultaneously
<?php /* Function Argument Unpacking in PHP 5.6 complements Variadic Functions! */ class Foo { public function __construct($arg1, $arg2, $arg3) { /* Do stuff constructor with arguments */ $this->arg1 = $arg1; $this->arg2 = $arg2; $this->arg3 = $arg3; } } class Bar extends Foo { public function __construct(...$args) { /** * Before argument unpacking in 5.6 we would use * call_user_func_array + func_get_args to accomplish * the same thing. */ // The intent here is to call the parent constructor parent::__construct(...$args); // Looks much nicer in 5.6 } } $bar = new Bar(1,2,3); var_dump($bar);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/6ibqf
function name:  (null)
number of ops:  10
compiled vars:  !0 = $bar
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   25     0  E >   NEW                                                  $1      'Bar'
          1        SEND_VAL_EX                                                  1
          2        SEND_VAL_EX                                                  2
          3        SEND_VAL_EX                                                  3
          4        DO_FCALL                                          0          
          5        ASSIGN                                                       !0, $1
   26     6        INIT_FCALL                                                   'var_dump'
          7        SEND_VAR                                                     !0
          8        DO_ICALL                                                     
          9      > RETURN                                                       1

Class Foo:
Function __construct:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/6ibqf
function name:  __construct
number of ops:  10
compiled vars:  !0 = $arg1, !1 = $arg2, !2 = $arg3
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    4     0  E >   RECV                                                 !0      
          1        RECV                                                 !1      
          2        RECV                                                 !2      
    6     3        ASSIGN_OBJ                                                   'arg1'
          4        OP_DATA                                                      !0
    7     5        ASSIGN_OBJ                                                   'arg2'
          6        OP_DATA                                                      !1
    8     7        ASSIGN_OBJ                                                   'arg3'
          8        OP_DATA                                                      !2
    9     9      > RETURN                                                       null

End of function __construct

End of class Foo.

Class Bar:
Function __construct:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/6ibqf
function name:  __construct
number of ops:  6
compiled vars:  !0 = $args
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   13     0  E >   RECV_VARIADIC                                        !0      
   21     1        INIT_STATIC_METHOD_CALL                                      
          2        SEND_UNPACK                                                  !0
          3        CHECK_UNDEF_ARGS                                             
          4        DO_FCALL                                          1          
   22     5      > RETURN                                                       null

End of function __construct

End of class Bar.

Generated using Vulcan Logic Dumper, using php 8.5.0


preferences:
163.07 ms | 2864 KiB | 14 Q