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<?php function cmp(& $reference, & $value) { $tmp = & $reference; $reference = uniqid(mt_rand()); $isReference = ($value === $reference); $reference = & $tmp; return $isReference; } $value = uniqid(); $reference = & $value; var_dump(cmp($reference, $value)); $value = new \exception(); var_dump(cmp($reference, $value)); var_dump(cmp($reference, $value = new \exception()));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/UrMbA
function name:  (null)
number of ops:  32
compiled vars:  !0 = $value, !1 = $reference
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   12     0  E >   INIT_FCALL                                               'uniqid'
          1        DO_ICALL                                         $2      
          2        ASSIGN                                                   !0, $2
   13     3        ASSIGN_REF                                               !1, !0
   14     4        INIT_FCALL                                               'var_dump'
          5        INIT_FCALL                                               'cmp'
          6        SEND_REF                                                 !1
          7        SEND_REF                                                 !0
          8        DO_FCALL                                      0  $5      
          9        SEND_VAR                                                 $5
         10        DO_ICALL                                                 
   16    11        NEW                                              $7      'exception'
         12        DO_FCALL                                      0          
         13        ASSIGN                                                   !0, $7
   17    14        INIT_FCALL                                               'var_dump'
         15        INIT_FCALL                                               'cmp'
         16        SEND_REF                                                 !1
         17        SEND_REF                                                 !0
         18        DO_FCALL                                      0  $10     
         19        SEND_VAR                                                 $10
         20        DO_ICALL                                                 
   19    21        INIT_FCALL                                               'var_dump'
         22        INIT_FCALL                                               'cmp'
         23        SEND_REF                                                 !1
         24        NEW                                              $12     'exception'
         25        DO_FCALL                                      0          
         26        ASSIGN                                           ~14     !0, $12
         27        SEND_VAL_EX                                              ~14
         28        DO_FCALL                                      0  $15     
         29        SEND_VAR                                                 $15
         30        DO_ICALL                                                 
         31      > RETURN                                                   1

Function cmp:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/UrMbA
function name:  cmp
number of ops:  14
compiled vars:  !0 = $reference, !1 = $value, !2 = $tmp, !3 = $isReference
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
          1        RECV                                             !1      
    4     2        ASSIGN_REF                                               !2, !0
    5     3        INIT_FCALL                                               'uniqid'
          4        INIT_FCALL                                               'mt_rand'
          5        DO_ICALL                                         $5      
          6        SEND_VAR                                                 $5
          7        DO_ICALL                                         $6      
          8        ASSIGN                                                   !0, $6
    6     9        IS_IDENTICAL                                     ~8      !1, !0
         10        ASSIGN                                                   !3, ~8
    7    11        ASSIGN_REF                                               !0, !2
    9    12      > RETURN                                                   !3
   10    13*     > RETURN                                                   null

End of function cmp

Generated using Vulcan Logic Dumper, using php 8.0.0


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