3v4l.org

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

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
154.55 ms | 1394 KiB | 15 Q