3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array();for ($i = 0; $i < 1000000; $i++) { $array[$i] = true;}for ($j = 0; $j < 1000000; $j+=1000) { if (isset($array[$j])) { }}
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 = 42) Position 1 = 13
Branch analysis from position: 13
2 jumps found. (Code = 44) Position 1 = 15, Position 2 = 10
Branch analysis from position: 15
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 10
2 jumps found. (Code = 43) Position 1 = 12, Position 2 = 12
Branch analysis from position: 12
2 jumps found. (Code = 44) Position 1 = 15, Position 2 = 10
Branch analysis from position: 15
Branch analysis from position: 10
Branch analysis from position: 12
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/KWXC9
function name:  (null)
number of ops:  16
compiled vars:  !0 = $array, !1 = $i, !2 = $j
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    1     0  E >   ASSIGN                                                   !0, <array>
          1        ASSIGN                                                   !1, 0
          2      > JMP                                                      ->6
          3    >   ASSIGN_DIM                                               !0, !1
          4        OP_DATA                                                  <true>
          5        PRE_INC                                                  !1
          6    >   IS_SMALLER                                               !1, 1000000
          7      > JMPNZ                                                    ~7, ->3
          8    >   ASSIGN                                                   !2, 0
          9      > JMP                                                      ->13
         10    >   ISSET_ISEMPTY_DIM_OBJ                         0          !0, !2
         11      > JMPZ                                                     ~9, ->12
         12    >   ASSIGN_OP                                     1          !2, 1000
         13    >   IS_SMALLER                                               !2, 1000000
         14      > JMPNZ                                                    ~11, ->10
         15    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
149.12 ms | 1394 KiB | 13 Q