3v4l.org

run code in 300+ PHP versions simultaneously
<?php function test() { } $result = test(); if($result == NULL) { echo 'duh'; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 5, Position 2 = 6
Branch analysis from position: 5
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 6
filename:       /in/WLinp
function name:  (null)
number of ops:  7
compiled vars:  !0 = $result
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    8     0  E >   INIT_FCALL                                               'test'
          1        DO_FCALL                                      0  $1      
          2        ASSIGN                                                   !0, $1
   10     3        IS_EQUAL                                                 !0, null
          4      > JMPZ                                                     ~3, ->6
   12     5    >   ECHO                                                     'duh'
   13     6    > > RETURN                                                   1

Function test:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/WLinp
function name:  test
number of ops:  1
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E > > RETURN                                                   null

End of function test

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
155.85 ms | 1396 KiB | 14 Q