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<?php if(empty($var)){ } if(true === empty($var)){ }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 2, Position 2 = 2
Branch analysis from position: 2
2 jumps found. (Code = 43) Position 1 = 5, Position 2 = 5
Branch analysis from position: 5
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 5
Branch analysis from position: 2
filename:       /in/OjrZ9
function name:  (null)
number of ops:  6
compiled vars:  !0 = $var
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   3     0  E >   <197>                                            ~1      !0
         1      > JMPZ                                                     ~1, ->2
   6     2    >   <197>                                            ~2      !0
         3        IS_IDENTICAL                                     ~3      ~2, <true>
         4      > JMPZ                                                     ~3, ->5
   8     5    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 7.3.0