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<?php class C { public $untyped; public string $typed; } $c = new C; var_dump( isset( $c->untyped ) ); // false var_dump( isset( $c->typed ) ); // false var_dump( $c->untyped ); // NULL //var_dump( $c->typed ); // Fatal error: Typed property C::$typed must not be accessed before initialization
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/VktR8
function name:  (null)
number of ops:  16
compiled vars:  !0 = $c
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    8     0  E >   NEW                                                  $1      'C'
          1        DO_FCALL                                          0          
          2        ASSIGN                                                       !0, $1
    9     3        INIT_FCALL                                                   'var_dump'
          4        ISSET_ISEMPTY_PROP_OBJ                               ~4      !0, 'untyped'
          5        SEND_VAL                                                     ~4
          6        DO_ICALL                                                     
   10     7        INIT_FCALL                                                   'var_dump'
          8        ISSET_ISEMPTY_PROP_OBJ                               ~6      !0, 'typed'
          9        SEND_VAL                                                     ~6
         10        DO_ICALL                                                     
   11    11        INIT_FCALL                                                   'var_dump'
         12        FETCH_OBJ_R                                          ~8      !0, 'untyped'
         13        SEND_VAL                                                     ~8
         14        DO_ICALL                                                     
   12    15      > RETURN                                                       1

Class C: [no user functions]

Generated using Vulcan Logic Dumper, using php 8.5.0


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