3v4l.org

run code in 300+ PHP versions simultaneously
<?php function test($data) { if (!isset($data)) { echo 'error'; } } test($_POST['test']);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Urumc
function name:  (null)
number of ops:  6
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   10     0  E >   INIT_FCALL                                               'test'
          1        FETCH_R                      global              ~0      '_POST'
          2        FETCH_DIM_R                                      ~1      ~0, 'test'
          3        SEND_VAL                                                 ~1
          4        DO_FCALL                                      0          
          5      > RETURN                                                   1

Function test:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 4, Position 2 = 5
Branch analysis from position: 4
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 5
filename:       /in/Urumc
function name:  test
number of ops:  6
compiled vars:  !0 = $data
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
    5     1        ISSET_ISEMPTY_CV                                 ~1      !0
          2        BOOL_NOT                                         ~2      ~1
          3      > JMPZ                                                     ~2, ->5
    6     4    >   ECHO                                                     'error'
    8     5    > > RETURN                                                   null

End of function test

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
167.6 ms | 1401 KiB | 14 Q