Re: note 25622 added to language.oop.newref

This is just me trying to resurrect the dead note nr 13489 I accidently deleted. // victor@php.net ----- Original Message ----- From: "Rick Php Net" <rick_php_net@rack1.php.net> Newsgroups: php.notes To: <php-notes@lists.php.net dot@rack1.php.net>; <net@rack1.php.net> Sent: Monday, September 30, 2002 11:37 PM Subject: note 25622 added to language.oop.newref > I was attempting to find a way to share data structures between objects and ideally wanted to be able to have a single shared object that would be returned as a reference from the constructor -- without having the caller use a different syntax. > > I couldn't get the effect I wanted, but was able to share the internal data structures (which is where the bulk of the storage was in my application). This is an example class I constructed (requires php >= 4.0.4) which illustrates the idea: > > class StaticList > { > var $list = 0; > > function StaticList($name = '') > { > global $master; > > if (!isset($master)) > { > print "creating new list $name<Br>\n"; > $master = $this; > $master->list = array(); > } > else > { > print "creating new list $name... using global list<br>\n"; > } > $this->list =& $master->list; > return ($this); > } > > function show() > { > if (is_array($this->list)) > { > if (count($this->list)) > { > reset($this->list); > while (list($key, $value) = each($this->list)) > { > print "list[$key] => $value<br>\n"; > } > } > else > { > print "list empty.<br>\n"; > } > } > else > { > print "list is not a list.<br>\n"; > } > } > > function append($val) > { > if (!is_array($this->list)) > { > print "forced to create list...<br>\n"; > $this->list = array(); > } > else > { > print "appending $val to list<br>\n"; > $this->list[] = $val; > } > } > } > > $a = new StaticList("a"); > $a->append(1); > $a->append(2); > > $b = new StaticList("b"); > $b->append(3); > $b->append(4); > $a->append(5); > $b->append(6); > > print "Contents of a:<br>\n"; > $a->show(); > > print "Contents of a:<br>\n"; > $b->show(); > -- > http://www.php.net/manual/en/language.oop.newref.php > http://master.php.net/manage/user-notes.php?action=edit+25622 > http://master.php.net/manage/user-notes.php?action=delete+25622 > http://master.php.net/manage/user-notes.php?action=reject+25622 >