3v4l.org

run code in 300+ PHP versions simultaneously
<?php function foo() { global $var; $var++; return; } $var = 1; echo $var, "\n"; // 1 foo(); // modifies $var echo $var, "\n"; // 2
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/lPLM5
function name:  (null)
number of ops:  8
compiled vars:  !0 = $var
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    8     0  E >   ASSIGN                                                   !0, 1
    9     1        ECHO                                                     !0
          2        ECHO                                                     '%0A'
   11     3        INIT_FCALL                                               'foo'
          4        DO_FCALL                                      0          
   13     5        ECHO                                                     !0
          6        ECHO                                                     '%0A'
          7      > RETURN                                                   1

Function foo:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/lPLM5
function name:  foo
number of ops:  4
compiled vars:  !0 = $var
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   BIND_GLOBAL                                              !0, 'var'
    4     1        PRE_INC                                                  !0
    5     2      > RETURN                                                   null
    6     3*     > RETURN                                                   null

End of function foo

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
156.23 ms | 1396 KiB | 14 Q