3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 2; $a = &$a; switch ($a) { case 2: $a = 1; continue; case 1: $a = 3; break; } var_dump($a);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 44) Position 1 = 4, Position 2 = 7
Branch analysis from position: 4
2 jumps found. (Code = 44) Position 1 = 6, Position 2 = 9
Branch analysis from position: 6
1 jumps found. (Code = 42) Position 1 = 11
Branch analysis from position: 11
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 9
1 jumps found. (Code = 42) Position 1 = 11
Branch analysis from position: 11
Branch analysis from position: 7
1 jumps found. (Code = 42) Position 1 = 11
Branch analysis from position: 11
filename:       /in/jZYAe
function name:  (null)
number of ops:  15
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 2
    3     1        ASSIGN_REF                                               !0, !0
    5     2        IS_EQUAL                                                 !0, 2
          3      > JMPNZ                                                    ~3, ->7
    8     4    >   IS_EQUAL                                                 !0, 1
          5      > JMPNZ                                                    ~3, ->9
          6    > > JMP                                                      ->11
    6     7    >   ASSIGN                                                   !0, 1
    7     8      > JMP                                                      ->11
    9     9    >   ASSIGN                                                   !0, 3
   10    10      > JMP                                                      ->11
   12    11    >   INIT_FCALL                                               'var_dump'
         12        SEND_VAR                                                 !0
         13        DO_ICALL                                                 
         14      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
152.73 ms | 1395 KiB | 15 Q