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<?php // returns true if property is safely accessible publicly by using $obj->$prop: function public_property_exists( $obj, $prop ){ // allow magic $obj->__isset( $prop ) to execute if exists if( isset( $obj->$prop )) return true; // no public/protected/private property exists with this name if( ! property_exists( $obj, $prop )) return false; // the property exists, but is it public? $rp = new ReflectionProperty( $obj, $prop ); return $rp->isPublic(); } class C { public $public = "I’m public!"; protected $protected = "I’m public!"; private $private = "I’m public!"; function __isset( $k ){ return substr( $k, 0, 5 ) === 'magic'; } function __get( $k ){ if( $k === 'magic_isset_but_null') return null; return "I’m {$k}!"; } } $o = new C(); foreach( array( 'public', 'protected', 'private', 'magic', 'magic_isset_but_null', 'missing' ) as $prop ){ if( public_property_exists( $o, $prop )) echo "\$o->{$prop} is a public property, its value is: ", var_export( $o->$prop, true ), "\n"; else echo "\$o->{$prop} is not a public property.\n"; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 4, Position 2 = 27
Branch analysis from position: 4
2 jumps found. (Code = 78) Position 1 = 5, Position 2 = 27
Branch analysis from position: 5
2 jumps found. (Code = 43) Position 1 = 10, Position 2 = 22
Branch analysis from position: 10
1 jumps found. (Code = 42) Position 1 = 26
Branch analysis from position: 26
1 jumps found. (Code = 42) Position 1 = 4
Branch analysis from position: 4
Branch analysis from position: 22
1 jumps found. (Code = 42) Position 1 = 4
Branch analysis from position: 4
Branch analysis from position: 27
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 27
filename:       /in/QBTd1
function name:  (null)
number of ops:  29
compiled vars:  !0 = $o, !1 = $prop
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   29     0  E >   NEW                                                  $2      'C'
          1        DO_FCALL                                          0          
          2        ASSIGN                                                       !0, $2
   31     3      > FE_RESET_R                                           $5      <array>, ->27
          4    > > FE_FETCH_R                                                   $5, !1, ->27
   35     5    >   INIT_FCALL                                                   'public_property_exists'
          6        SEND_VAR                                                     !0
          7        SEND_VAR                                                     !1
          8        DO_FCALL                                          0  $6      
          9      > JMPZ                                                         $6, ->22
   36    10    >   ROPE_INIT                                         3  ~8      '%24o-%3E'
         11        ROPE_ADD                                          1  ~8      ~8, !1
         12        ROPE_END                                          2  ~7      ~8, '+is+a+public+property%2C+its+value+is%3A+'
         13        ECHO                                                         ~7
   37    14        INIT_FCALL                                                   'var_export'
         15        FETCH_OBJ_R                                          ~10     !0, !1
         16        SEND_VAL                                                     ~10
         17        SEND_VAL                                                     <true>
         18        DO_ICALL                                             $11     
         19        ECHO                                                         $11
         20        ECHO                                                         '%0A'
   35    21      > JMP                                                          ->26
   38    22    >   ROPE_INIT                                         3  ~13     '%24o-%3E'
         23        ROPE_ADD                                          1  ~13     ~13, !1
         24        ROPE_END                                          2  ~12     ~13, '+is+not+a+public+property.%0A'
         25        ECHO                                                         ~12
   31    26    > > JMP                                                          ->4
         27    >   FE_FREE                                                      $5
   39    28      > RETURN                                                       1

Function public_property_exists:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 4, Position 2 = 5
Branch analysis from position: 4
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 5
2 jumps found. (Code = 43) Position 1 = 8, Position 2 = 9
Branch analysis from position: 8
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 9
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/QBTd1
function name:  public_property_exists
number of ops:  18
compiled vars:  !0 = $obj, !1 = $prop, !2 = $rp
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    4     0  E >   RECV                                                 !0      
          1        RECV                                                 !1      
    6     2        ISSET_ISEMPTY_PROP_OBJ                                       !0, !1
          3      > JMPZ                                                         ~3, ->5
          4    > > RETURN                                                       <true>
    9     5    >   FRAMELESS_ICALL_2                property_exists      ~4      !0, !1
          6        BOOL_NOT                                             ~5      ~4
          7      > JMPZ                                                         ~5, ->9
          8    > > RETURN                                                       <false>
   12     9    >   NEW                                                  $6      'ReflectionProperty'
         10        SEND_VAR_EX                                                  !0
         11        SEND_VAR_EX                                                  !1
         12        DO_FCALL                                          0          
         13        ASSIGN                                                       !2, $6
   13    14        INIT_METHOD_CALL                                             !2, 'isPublic'
         15        DO_FCALL                                          0  $9      
         16      > RETURN                                                       $9
   14    17*     > RETURN                                                       null

End of function public_property_exists

Class C:
Function __isset:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/QBTd1
function name:  __isset
number of ops:  6
compiled vars:  !0 = $k
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   20     0  E >   RECV                                                 !0      
   21     1        FRAMELESS_ICALL_3                substr              ~1      !0, 0
          2        OP_DATA                                                      5
          3        IS_IDENTICAL                                         ~2      ~1, 'magic'
          4      > RETURN                                                       ~2
   22     5*     > RETURN                                                       null

End of function __isset

Function __get:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 3, Position 2 = 4
Branch analysis from position: 3
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 4
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/QBTd1
function name:  __get
number of ops:  9
compiled vars:  !0 = $k
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   23     0  E >   RECV                                                 !0      
   24     1        IS_IDENTICAL                                                 !0, 'magic_isset_but_null'
          2      > JMPZ                                                         ~1, ->4
          3    > > RETURN                                                       null
   25     4    >   ROPE_INIT                                         3  ~3      'I%E2%80%99m+'
          5        ROPE_ADD                                          1  ~3      ~3, !0
          6        ROPE_END                                          2  ~2      ~3, '%21'
          7      > RETURN                                                       ~2
   26     8*     > RETURN                                                       null

End of function __get

End of class C.

Generated using Vulcan Logic Dumper, using php 8.5.0


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