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<?php $test= NULL; if(NULL == $test){ echo "it's null"; } if(NULL == $testUndef){ echo "it's null two"; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 3, Position 2 = 4
Branch analysis from position: 3
2 jumps found. (Code = 43) Position 1 = 6, Position 2 = 7
Branch analysis from position: 6
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 7
Branch analysis from position: 4
filename:       /in/jVc2F
function name:  (null)
number of ops:  8
compiled vars:  !0 = $test, !1 = $testUndef
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, null
    4     1        IS_EQUAL                                                 !0, null
          2      > JMPZ                                                     ~3, ->4
    5     3    >   ECHO                                                     'it%27s+null'
    8     4    >   IS_EQUAL                                                 !1, null
          5      > JMPZ                                                     ~4, ->7
    9     6    >   ECHO                                                     'it%27s+null+two'
   10     7    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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