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<?php class A{ function do_stuff(&$b) { $defined = 0; #trigger_error("If I fixed the undefined variable but enabled this line instead, it will also turn b from an object into a string! So user-triggered notices bork it as well."); $x = $undefined || $defined ? 14 : 0; var_dump('In function:', $b); } } class B{} $a = new A(); $b = new B(); $a->do_stuff($b); var_dump('After function:', $b);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Jjgq7
function name:  (null)
number of ops:  14
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   14     0  E >   NEW                                              $2      'A'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $2
   15     3        NEW                                              $5      'B'
          4        DO_FCALL                                      0          
          5        ASSIGN                                                   !1, $5
   17     6        INIT_METHOD_CALL                                         !0, 'do_stuff'
          7        SEND_VAR_EX                                              !1
          8        DO_FCALL                                      0          
   18     9        INIT_FCALL                                               'var_dump'
         10        SEND_VAL                                                 'After+function%3A'
         11        SEND_VAR                                                 !1
         12        DO_ICALL                                                 
         13      > RETURN                                                   1

Class A:
Function do_stuff:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 47) Position 1 = 3, Position 2 = 4
Branch analysis from position: 3
2 jumps found. (Code = 43) Position 1 = 5, Position 2 = 7
Branch analysis from position: 5
1 jumps found. (Code = 42) Position 1 = 8
Branch analysis from position: 8
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 7
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 4
filename:       /in/Jjgq7
function name:  do_stuff
number of ops:  14
compiled vars:  !0 = $b, !1 = $defined, !2 = $x, !3 = $undefined
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   RECV                                             !0      
    5     1        ASSIGN                                                   !1, 0
    7     2      > JMPNZ_EX                                         ~5      !3, ->4
          3    >   BOOL                                             ~5      !1
          4    > > JMPZ                                                     ~5, ->7
          5    >   QM_ASSIGN                                        ~6      14
          6      > JMP                                                      ->8
          7    >   QM_ASSIGN                                        ~6      0
          8    >   ASSIGN                                                   !2, ~6
    8     9        INIT_FCALL                                               'var_dump'
         10        SEND_VAL                                                 'In+function%3A'
         11        SEND_VAR                                                 !0
         12        DO_ICALL                                                 
    9    13      > RETURN                                                   null

End of function do_stuff

End of class A.

Class B: [no user functions]

Generated using Vulcan Logic Dumper, using php 8.0.0


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