Re: [PHP] bless function: a better aproach
Curt Zirzow wrote: * Thus wrote Francisco M. Marzoa Alonso: Giving it a round, this seems to be a better aproach than the previous one. It has the advantage of provide direct access to the original array obtained from casting without boring about ___FAKE_KEYS_. ? ... $Obj = new TestClass (); //$Clone = (array) $Obj; $Clone = obj2array ( $Obj ); I still dont see why a simple: $obj = new TestClass(); $data = serialize($obj); $Clone = unserialize($data); Cant doesn't work for you. ah so that what the OP is trying to do! -- Raditha Dissanayake. http://www.radinks.com/sftp/ | http://www.raditha.com/megaupload Lean and mean Secure FTP applet with | Mega Upload - PHP file uploader Graphical User Inteface. Just 128 KB | with progress bar. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] bless function
Ok, I think I've got it now. The code is autoexplicative, the only
restriction is that the object must be converted to an array using the
function obj2array instead of a direct cast. There's another ways to do
this without the needless of that obj2array function, but I think this
is not really a limitation.
Here it is:
?
function obj2array ( $Instance ) {
$clone = (array) $Instance;
$rtn = $clone;
while ( list ($key, $value) = each ($clone) ) {
$aux = explode (\0, $key);
$newkey = $aux[count($aux)-1];
if ( $newkey != $key ) {
$rtn[$newkey] = $rtn[$key];
$rtn['___FAKE_KEYS_'][] = $newkey;
}
}
return $rtn;
}
function bless ( $Instance, $Class ) {
if ( ! (is_array ($Instance) ) ) {
return NULL;
}
// First drop faked keys if available
foreach ( $Instance['___FAKE_KEYS_'] as $fake_key ) {
unset ($Instance[$fake_key]);
}
unset ( $Instance['___FAKE_KEYS_'] );
// Get serialization data from array
$serdata = serialize ( $Instance );
/* For an array serialized data seems to meant:
array_tag:array_count:{array_elems}
array_tag is always 'a'
array_count is the number of elements in the array
array_elems are the elemens in the array
For an object seems to meant:
object_tag:object_class_name_len:object_class_name:object_count:{object_members}
object_tag is always 'O'
object_class_name_len is the length in chars of
object_class_name string
object_class_name is a string with the name of the class
object_count is the number of object members
object_members is the object_members itself (exactly equal to
array_elems)
*/
list ($array_params, $array_elems) = explode ('{', $serdata, 2);
list ($array_tag, $array_count) = explode (':', $array_params, 3 );
$serdata = O:.strlen
($Class).:\$Class\:$array_count:{.$array_elems;
$Instance = unserialize ( $serdata );
return $Instance;
}
class TestClass {
private $One=1;
protected $Two=2;
public $Three=3;
public function sum() {
return $this-One+$this-Two+$this-Three;
}
}
$Obj = new TestClass ();
//$Clone = (array) $Obj;
$Clone = obj2array ( $Obj );
echo As the original object:br;
print_r ($Obj);
echo brbrAs an array:br;
print_r ($Clone);
$Clone[One]=7;
$Clone[Two]=7;
$Clone[Three]=7;
bless ( $Clone, TestClass );
echo brbrAfter blessing as a TestClass instance:br;
print_r ($Clone);
echo brbrCalling sum method: ;
echo $Clone-sum();
echo brThe array was blessed! miracle!!! ;-)br;
?
Hope someone appart from me find it useful. :-)
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[PHP] bless function: a better aproach
Giving it a round, this seems to be a better aproach than the previous
one. It has the advantage of provide direct access to the original array
obtained from casting without boring about ___FAKE_KEYS_.
?
function obj2array ( $Instance ) {
$clone = (array) $Instance;
$rtn = array ();
$rtn['___SOURCE_KEYS_'] = $clone;
while ( list ($key, $value) = each ($clone) ) {
$aux = explode (\0, $key);
$newkey = $aux[count($aux)-1];
$rtn[$newkey] = $rtn['___SOURCE_KEYS_'][$key];
}
return $rtn;
}
function bless ( $Instance, $Class ) {
if ( ! (is_array ($Instance) ) ) {
return NULL;
}
// First get source keys if available
if ( isset ($Instance['___SOURCE_KEYS_'])) {
$Instance = $Instance['___SOURCE_KEYS_'];
}
// Get serialization data from array
$serdata = serialize ( $Instance );
/* For an array serialized data seems to meant:
array_tag:array_count:{array_elems}
array_tag is always 'a'
array_count is the number of elements in the array
array_elems are the elemens in the array
For an object seems to meant:
object_tag:object_class_name_len:object_class_name:object_count:{object_members}
object_tag is always 'O'
object_class_name_len is the length in chars of
object_class_name string
object_class_name is a string with the name of the class
object_count is the number of object members
object_members is the object_members itself (exactly equal to
array_elems)
*/
list ($array_params, $array_elems) = explode ('{', $serdata, 2);
list ($array_tag, $array_count) = explode (':', $array_params, 3 );
$serdata = O:.strlen
($Class).:\$Class\:$array_count:{.$array_elems;
$Instance = unserialize ( $serdata );
return $Instance;
}
class TestClass {
private $One=1;
protected $Two=2;
public $Three=3;
public function sum() {
return $this-One+$this-Two+$this-Three;
}
}
$Obj = new TestClass ();
//$Clone = (array) $Obj;
$Clone = obj2array ( $Obj );
echo As the original object:br;
print_r ($Obj);
echo brbrAs an array:br;
print_r ($Clone);
$Clone[One]=7;
$Clone[Two]=7;
$Clone[Three]=7;
bless ( $Clone, TestClass );
echo brbrAfter blessing as a TestClass instance:br;
print_r ($Clone);
echo brbrCalling sum method: ;
echo $Clone-sum();
echo brThe array was blessed! miracle!!! ;-)br;
?
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Re: [PHP] bless function: a better aproach
* Thus wrote Francisco M. Marzoa Alonso: Giving it a round, this seems to be a better aproach than the previous one. It has the advantage of provide direct access to the original array obtained from casting without boring about ___FAKE_KEYS_. ? ... $Obj = new TestClass (); //$Clone = (array) $Obj; $Clone = obj2array ( $Obj ); I still dont see why a simple: $obj = new TestClass(); $data = serialize($obj); $Clone = unserialize($data); Cant doesn't work for you. Curt -- Quoth the Raven, Nevermore. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
