3v4l.org

run code in 300+ PHP versions simultaneously
<?php $b = foo(); if (!$b) { echo "test\n"; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 5, Position 2 = 6
Branch analysis from position: 5
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 6
filename:       /in/9Ed03
function name:  (null)
number of ops:  7
compiled vars:  !0 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL_BY_NAME                                       'foo'
          1        DO_FCALL                                      0  $1      
          2        ASSIGN                                                   !0, $1
    4     3        BOOL_NOT                                         ~3      !0
          4      > JMPZ                                                     ~3, ->6
    5     5    >   ECHO                                                     'test%0A'
    6     6    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
154.86 ms | 1392 KiB | 13 Q