3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = [0, '0', '', null]; foreach ($foo as $item) { $item = (bool) $item; var_dump($item); } $foo = [1, '1', 'on', 'selected']; foreach ($foo as $item) { $item = (bool) $item; var_dump($item); }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 2, Position 2 = 9
Branch analysis from position: 2
2 jumps found. (Code = 78) Position 1 = 3, Position 2 = 9
Branch analysis from position: 3
1 jumps found. (Code = 42) Position 1 = 2
Branch analysis from position: 2
Branch analysis from position: 9
2 jumps found. (Code = 77) Position 1 = 12, Position 2 = 19
Branch analysis from position: 12
2 jumps found. (Code = 78) Position 1 = 13, Position 2 = 19
Branch analysis from position: 13
1 jumps found. (Code = 42) Position 1 = 12
Branch analysis from position: 12
Branch analysis from position: 19
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 19
Branch analysis from position: 9
filename:       /in/klNEv
function name:  (null)
number of ops:  21
compiled vars:  !0 = $foo, !1 = $item
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    4     1      > FE_RESET_R                                       $3      !0, ->9
          2    > > FE_FETCH_R                                               $3, !1, ->9
    5     3    >   BOOL                                             ~4      !1
          4        ASSIGN                                                   !1, ~4
    6     5        INIT_FCALL                                               'var_dump'
          6        SEND_VAR                                                 !1
          7        DO_ICALL                                                 
    4     8      > JMP                                                      ->2
          9    >   FE_FREE                                                  $3
    9    10        ASSIGN                                                   !0, <array>
   10    11      > FE_RESET_R                                       $8      !0, ->19
         12    > > FE_FETCH_R                                               $8, !1, ->19
   11    13    >   BOOL                                             ~9      !1
         14        ASSIGN                                                   !1, ~9
   12    15        INIT_FCALL                                               'var_dump'
         16        SEND_VAR                                                 !1
         17        DO_ICALL                                                 
   10    18      > JMP                                                      ->12
         19    >   FE_FREE                                                  $8
   13    20      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
153.62 ms | 1395 KiB | 15 Q