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<?php function &func(){ static $static = 0; $static++; return $static; } $var1 =& func(); echo "var1:", $var1; // 1 func(); func(); echo "var1:", $var1; // 3 $var2 = func(); // assignment without the & echo "var2:", $var2; // 4 func(); func(); echo "var1:", $var1; // 6 echo "var2:", $var2; // still 4
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/798n5
function name:  (null)
number of ops:  25
compiled vars:  !0 = $var1, !1 = $var2
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    9     0  E >   INIT_FCALL                                               'func'
          1        DO_FCALL                                      0  $2      
          2        ASSIGN_REF                                               !0, $2
   10     3        ECHO                                                     'var1%3A'
          4        ECHO                                                     !0
   11     5        INIT_FCALL                                               'func'
          6        DO_FCALL                                      0          
   12     7        INIT_FCALL                                               'func'
          8        DO_FCALL                                      0          
   13     9        ECHO                                                     'var1%3A'
         10        ECHO                                                     !0
   14    11        INIT_FCALL                                               'func'
         12        DO_FCALL                                      0  $6      
         13        ASSIGN                                                   !1, $6
   15    14        ECHO                                                     'var2%3A'
         15        ECHO                                                     !1
   16    16        INIT_FCALL                                               'func'
         17        DO_FCALL                                      0          
   17    18        INIT_FCALL                                               'func'
         19        DO_FCALL                                      0          
   18    20        ECHO                                                     'var1%3A'
         21        ECHO                                                     !0
   19    22        ECHO                                                     'var2%3A'
         23        ECHO                                                     !1
         24      > RETURN                                                   1

Function func:
Finding entry points
Branch analysis from position: 0
Return found
filename:       /in/798n5
function name:  func
number of ops:  4
compiled vars:  !0 = $static
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   BIND_STATIC                                              !0
    5     1        PRE_INC                                                  !0
    6     2      > RETURN_BY_REF                                            !0
    7     3*     > RETURN_BY_REF                                            null

End of function func

Generated using Vulcan Logic Dumper, using php 8.0.0


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