📄 club_singer.php
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<?phprequire_once("class.Collection.php");class Singer { public $name; public function __construct($name) { $this->name = $name; }}class NightClub { public $name; public $singers; public function __construct($name) { $this->name = $name; $this->singers = new Collection(); $this->singers->setLoadCallback('_loadSingers', $this); } private function _loadSingers(Collection $col) { print "(We're loading the singers!)<br>\n"; //these would normally come from a database $col->addItem(new Singer('Frank Sinatra')); $col->addItem(new Singer('Dean Martin')); $col->addItem(new Singer('Sammy Davis, Jr.')); }}?>
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