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<?php class A { function __isset($x) { echo '__isset: ', $x; return rand(); } } $a = new A; echo empty($a);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/2IXWP
function name:  (null)
number of ops:  6
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    9     0  E >   NEW                                              $1      'A'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $1
   10     3        ISSET_ISEMPTY_CV                                 ~4      !0
          4        ECHO                                                     ~4
          5      > RETURN                                                   1

Class A:
Function __isset:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/2IXWP
function name:  __isset
number of ops:  7
compiled vars:  !0 = $x
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
    4     1        ECHO                                                     '__isset%3A+'
          2        ECHO                                                     !0
    5     3        INIT_FCALL                                               'rand'
          4        DO_ICALL                                         $1      
          5      > RETURN                                                   $1
    6     6*     > RETURN                                                   null

End of function __isset

End of class A.

Generated using Vulcan Logic Dumper, using php 8.0.0


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