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<?php $foo = ''; echo "\r\nTest with == \r\n"; if ($foo == null) { echo 'foo is null'; } else { echo 'foo is not null'; } echo "\r\n-------------------\r\n"; echo "\r\nTest with ===\r\n"; if ($foo === null) { echo 'foo is null'; } else { echo 'foo is not null'; }
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 = 11, Position 2 = 13
Branch analysis from position: 11
1 jumps found. (Code = 42) Position 1 = 14
Branch analysis from position: 14
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 13
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 6
2 jumps found. (Code = 43) Position 1 = 11, Position 2 = 13
Branch analysis from position: 11
Branch analysis from position: 13
filename:       /in/KAh7g
function name:  (null)
number of ops:  15
compiled vars:  !0 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, ''
    4     1        ECHO                                                     '%0D%0ATest+with+%3D%3D+%0D%0A'
    5     2        IS_EQUAL                                                 !0, null
          3      > JMPZ                                                     ~2, ->6
    6     4    >   ECHO                                                     'foo+is+null'
          5      > JMP                                                      ->7
    8     6    >   ECHO                                                     'foo+is+not+null'
   11     7    >   ECHO                                                     '%0D%0A-------------------%0D%0A'
   13     8        ECHO                                                     '%0D%0ATest+with+%3D%3D%3D%0D%0A'
   14     9        TYPE_CHECK                                    2          !0
         10      > JMPZ                                                     ~3, ->13
   15    11    >   ECHO                                                     'foo+is+null'
         12      > JMP                                                      ->14
   17    13    >   ECHO                                                     'foo+is+not+null'
   18    14    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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