3v4l.org

run code in 300+ PHP versions simultaneously
<?php function f($f) { $f(['x' => 1]); echo $x; } f('extract');
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/nLccg
function name:  (null)
number of ops:  4
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    8     0  E >   INIT_FCALL                                               'f'
          1        SEND_VAL                                                 'extract'
          2        DO_FCALL                                      0          
          3      > RETURN                                                   1

Function f:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/nLccg
function name:  f
number of ops:  6
compiled vars:  !0 = $f, !1 = $x
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
    4     1        INIT_DYNAMIC_CALL                                        !0
          2        SEND_VAL_EX                                              <array>
          3        DO_FCALL                                      0          
    5     4        ECHO                                                     !1
    6     5      > RETURN                                                   null

End of function f

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
136.68 ms | 997 KiB | 14 Q