3v4l.org

run code in 300+ PHP versions simultaneously
<?php $sum = 0; for ($i = 0; $i++; $i < 1000) $sum += $i; echo "$sum\n";
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 = 8, Position 2 = 3
Branch analysis from position: 8
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 3
2 jumps found. (Code = 44) Position 1 = 8, Position 2 = 3
Branch analysis from position: 8
Branch analysis from position: 3
filename:       /in/FeX7O
function name:  (null)
number of ops:  12
compiled vars:  !0 = $sum, !1 = $i
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 0
    5     1        ASSIGN                                                   !1, 0
          2      > JMP                                                      ->6
    6     3    >   ASSIGN_OP                                     1          !0, !1
    5     4        IS_SMALLER                                       ~5      !1, 1000
          5        FREE                                                     ~5
          6    >   POST_INC                                         ~6      !1
          7      > JMPNZ                                                    ~6, ->3
    8     8    >   NOP                                                      
          9        FAST_CONCAT                                      ~7      !0, '%0A'
         10        ECHO                                                     ~7
         11      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
147.87 ms | 1393 KiB | 13 Q