Re: How can I do the opposite of property_exists(), maybe a creat_property() in PHP5?

On Tue, 2009-02-03 at 08:30 +0100, Edmund Hertle wrote: > 2009/2/3 Daevid Vincent <daevid@daevid.com> > > > Is there a way to create a new property via PHP 5.2.4? > > > > I get a hash back from an authentication server. I'm not guaranteed that > > someone in another department won't add new key/values to the returned > > hash/array. I'm trying to work around that part gracefully so that the > > code doesn't blow up on a customer in such an event. The main try/catch > > will suppress errors already, but I thought it would be nice to be able > > to handle this stuff automatically rather than constantly updating a > > User.class.php file all the time. > > > > "creating new property this->oraclecustomerid with 1122" > > > > but when I try to set the value with the $this->$pkey = $value; > > > > It triggers __call() which then triggers __set() which throws my > > BadProperty exception. > > > > How come $this->$pkey = $value isn't creating/setting a property? > > Or how do I do something like create_property($this, $pkey); > > so that I can then set it via $this->oraclecustomerid = 1122 or > > $this->set_oraclecustomerid(1122) ??? > > > > <?php > > function load_from_user_data($user_data) > > { > > //now loop through the rest of the user_data array and assign via a > > set_foo() method > > foreach ($user_data as $key => $value) > > { > > //try > > { > > $pkey = strtolower($key); > > //[dv] this is sort of a hack to > > "automatically" create a new > > property/variable > > // for 'new' hashes key/values we > > may not know about. > > // It's really designed to supress > > errors and they really should > > be added to this User.class.php properly. > > if ( !property_exists($this, $pkey) ) > > { > > echo "creating new property > > this->$pkey with $value<br>\n"; > > $this->$pkey = $value; //THIS BLOWS > > UP ON THE __set() > > echo "this->$pkey = ".$this->$pkey; > > } > Hey, > well, $this->$pkey is wrong syntax. Try $this->pkey = $value No Eddie, it's one of the beautiful, simple and powerful things about PHP. http://www.php.net/manual/en/language.variables.variable.php As I loop over the hash, i am TRYING to create a new class property of the key and assigning it the value. $pkey is basically the hash's $key in mixed case, forced to lowercase. You can do this for variables and for functions/methods too. This is a 'factory'. I've used it for example for parsing an XML file and operating on the data within various 'blocks' by reading the <block name="foo" value="bar"> and then executing $$name($value). Thanks for trying though. ;-) > > > > else > > { > > $class_variable = 'set_'.$pkey; > > $this->$class_variable($value); > > unset($user_data[$key]); > > } > > } > > //catch (Exception $e) > > { > > //echo $e->getMessage()."\n"; > > } > > } > > > > //should new fields be returned in the $user_data that are > > not > > accounted for above... > > if ($_SESSION['DEVELOPMENT'] && count($user_data)) > > { > > echo "<!-- Unaccounted for user_data hashes. Please > > add these into > > User.class.php:\n"; > > var_dump($user_data); > > echo "-->"; > > } > > > > //THESE TWO LINES FATAL ERROR ON THE __get(): > > echo "this->oraclecustomerid = ".$this->oraclecustomerid; > > echo "this->get_oraclecustomerid() = > > ".$this->get_oraclecustomerid(); > > } > > ?> > >