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<?php $having = null; $str = "I have $having fucks"; echo $str;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/vQrN1
function name:  (null)
number of ops:  7
compiled vars:  !0 = $having, !1 = $str
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, null
    3     1        ROPE_INIT                                     3  ~4      'I+have+'
          2        ROPE_ADD                                      1  ~4      ~4, !0
          3        ROPE_END                                      2  ~3      ~4, '+fucks'
          4        ASSIGN                                                   !1, ~3
    4     5        ECHO                                                     !1
          6      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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