3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = true; $b = false; $c = true; $d = [ ($a ? "a":null), ($b ? "b":null), ($c ? "c":null), ]; var_dump($d);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 4, Position 2 = 6
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 7
Branch analysis from position: 7
2 jumps found. (Code = 43) Position 1 = 9, Position 2 = 11
Branch analysis from position: 9
1 jumps found. (Code = 42) Position 1 = 12
Branch analysis from position: 12
2 jumps found. (Code = 43) Position 1 = 14, Position 2 = 16
Branch analysis from position: 14
1 jumps found. (Code = 42) Position 1 = 17
Branch analysis from position: 17
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 16
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 11
2 jumps found. (Code = 43) Position 1 = 14, Position 2 = 16
Branch analysis from position: 14
Branch analysis from position: 16
Branch analysis from position: 6
2 jumps found. (Code = 43) Position 1 = 9, Position 2 = 11
Branch analysis from position: 9
Branch analysis from position: 11
filename:       /in/udclh
function name:  (null)
number of ops:  23
compiled vars:  !0 = $a, !1 = $b, !2 = $c, !3 = $d
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <true>
          1        ASSIGN                                                   !1, <false>
          2        ASSIGN                                                   !2, <true>
    6     3      > JMPZ                                                     !0, ->6
          4    >   QM_ASSIGN                                        ~7      'a'
          5      > JMP                                                      ->7
          6    >   QM_ASSIGN                                        ~7      null
          7    >   INIT_ARRAY                                       ~8      ~7
    7     8      > JMPZ                                                     !1, ->11
          9    >   QM_ASSIGN                                        ~9      'b'
         10      > JMP                                                      ->12
    6    11    >   QM_ASSIGN                                        ~9      null
         12    >   ADD_ARRAY_ELEMENT                                ~8      ~9
    8    13      > JMPZ                                                     !2, ->16
         14    >   QM_ASSIGN                                        ~10     'c'
         15      > JMP                                                      ->17
    6    16    >   QM_ASSIGN                                        ~10     null
         17    >   ADD_ARRAY_ELEMENT                                ~8      ~10
    5    18        ASSIGN                                                   !3, ~8
   11    19        INIT_FCALL                                               'var_dump'
         20        SEND_VAR                                                 !3
         21        DO_ICALL                                                 
         22      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
151.11 ms | 1396 KiB | 15 Q