3v4l.org

run code in 300+ PHP versions simultaneously
<?php $makefoo = true; /* Qui non possiamo chiamare foo() poiché non esiste ancora, ma possiamo chiamare bar() */ bar(); if ($makefoo) { function foo() { echo "Io non esisto sino a quando il programma non mi raggiunge.\n"; } } /* Ora possiamo chiamare foo() poiché $makefoo vale true */ if ($makefoo) foo(); function bar() { echo "Io esco immediatamente dopo l'avvio del programma.\n"; } ?>
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 4, Position 2 = 5
Branch analysis from position: 4
2 jumps found. (Code = 43) Position 1 = 6, Position 2 = 8
Branch analysis from position: 6
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 8
Branch analysis from position: 5
filename:       /in/1v5vu
function name:  (null)
number of ops:  9
compiled vars:  !0 = $makefoo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <true>
    9     1        INIT_FCALL_BY_NAME                                       'bar'
          2        DO_FCALL                                      0          
   11     3      > JMPZ                                                     !0, ->5
   12     4    >   DECLARE_FUNCTION                                         'foo'
   21     5    > > JMPZ                                                     !0, ->8
          6    >   INIT_FCALL_BY_NAME                                       'foo'
          7        DO_FCALL                                      0          
   28     8    > > RETURN                                                   1

Function %00foo%2Fin%2F1v5vu%3A12%240:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/1v5vu
function name:  foo
number of ops:  2
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   14     0  E >   ECHO                                                     'Io+non+esisto+sino+a+quando+il+programma+non+mi+raggiunge.%0A'
   15     1      > RETURN                                                   null

End of function %00foo%2Fin%2F1v5vu%3A12%240

Function bar:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/1v5vu
function name:  bar
number of ops:  2
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   25     0  E >   ECHO                                                     'Io+esco+immediatamente+dopo+l%27avvio+del+programma.%0A'
   26     1      > RETURN                                                   null

End of function bar

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
144.45 ms | 1394 KiB | 13 Q