I was looking for formal documentation because I am doing a pre-processor for some PHP extensions and wanted to know the right and formal description for it. Nevertheless, I think your examples below cover most cases, a help much appreciated. Thanks Satyam "Jochem Maas" <jochem@xxxxxxxxxxxxx> wrote in message news:42694092.6000405@xxxxxxxxxxxxxxxx > Richard Davey wrote: >> Hello Satyam, >> >> Friday, April 22, 2005, 3:59:38 PM, you wrote: >> >> S> I've been going through the manual and haven't found 'var' >> S> documented anywhere, as far as I found, it is just used, and that's >> S> it. It seems it first appears when it talks about Classes, and it >> S> is just used in the examples as if everyone knew what var is >> S> supposed to do. >> >> It's a "constant initializer" - which is both an accurate and >> misleading title at the same time :) It will initialise a variable to >> be constant through-out your entire class (meaning any method can >> access it) but unlike true PHP constants (those created with define) >> the value of the variable can be manipulated from just about anywhere. > > > indeed in php you can do the following instead: > > <? > > error_reporting( E_ALL & E_STRICT ); > class Test > { > // this first var (commented out) should (I thought) act as if defined > // 'public' - it doesn't given a parse error with php -l, but does > when run. > // I haven't run into this problem in 1.5 years of writing php5... > // I must be having a brain freeze :-/ > //$myVar; > > // publically accessible instances variables > public $myVar1; // not initialized with a value > public $myVar2 = "2"; // initialized with a value > > // an instance variable thats only available > // from within _all_ methods of this object. > // .. methods could be defined in subclasses or parent-classes > protected $myVar3 = "3"; > > // an instance variable that is only available to the > // methods defined in _this_ class > private $myVar4 = "4"; > > // a variable with class scope (all instances see the same value), > // publically accessible > static $myVar5 = "5"; > static public $myVar6 = "6"; > > // a variable with class scope (all instances see the same value), > // thats only available from within _all_ methods of this object. > static protected $myVar7 = "7"; > > // a variable with class scope (all instances see the same value), > // thats only available from methods defined in _this_ class > static private $myVar8 = "8"; > > public function get4() { return $this->myVar4; } > public function get8() { return self::$myVar8; } > } > > // basic usage examples: > > var_dump( ($t = new Test), $t->myVar2, $t->get4(), Test::$myVar6, > $t->get8() ); > > ?> > > I can thoroughly recommend php5's much improved object model, > try other variations of calls to the defined 'myVar's, also try doing > with sublcasses, see what does/doesn't work, have fun :-) > >> >> It is of course PHP4 only and is depreciated in PHP5. >> >> Best regards, >> >> Richard Davey -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
