3v4l.org

run code in 300+ PHP versions simultaneously
<?php function foo() { if (isset($this)) { echo "Foo!"; } } foo();
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/JL1K9
function name:  (null)
number of ops:  3
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    9     0  E >   INIT_FCALL                                               'foo'
          1        DO_FCALL                                      0          
          2      > RETURN                                                   1

Function foo:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 2, Position 2 = 3
Branch analysis from position: 2
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 3
filename:       /in/JL1K9
function name:  foo
number of ops:  4
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   ISSET_ISEMPTY_THIS                               ~0      
          1      > JMPZ                                                     ~0, ->3
    5     2    >   ECHO                                                     'Foo%21'
    7     3    > > RETURN                                                   null

End of function foo

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
158.21 ms | 1388 KiB | 14 Q