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<?php class A { function __isset($x) { echo '__isset: ', $x; return true; } } $a = new A; echo empty($a->prop);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/WigDU
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_PROP_OBJ                           ~4      !0, 'prop'
          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/WigDU
function name:  __isset
number of ops:  5
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      > RETURN                                                   <true>
    6     4*     > RETURN                                                   null

End of function __isset

End of class A.

Generated using Vulcan Logic Dumper, using php 8.0.0


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