Design Patterns in PHP--viewer Mode _php Tutorial

Design Patterns in PHP--viewer mode

 Observers[] = $observer;} Delete Viewer (person looking at flower) Public Function detach (Observer $observer) {if (In_array ($observer, $this->observers)) {$index = Array_    Search ($observer, $this->observers);            unset ($this->observers[$index]); return TRUE;} return false; }//notifies the Observer that public function notify () {foreach ($this->observers as $observer) {$observer->dosometing ()}}} Specific Person class Loveflowerperson implements observer{private $name; function __construct ($sName) {$this->name = $sName ; } public Function dosometing () {echo $this->name. ' Watering flowers ';}} /* Add the First watcher flower */$subject = new Flower (), $observer 1 = new Loveflowerperson (' WLT '); $subject->attach ($observer 1);
/* Add a second observer florist */
$observer 2 = new Loveflowerperson (' WLB '); $subject->attach ($observer 2); $subject->notify (); Theme changes, notify Observer Echo ' Delete a florist
'; $subject->detach ($observer 2); $subject->notify (); Subject change, notifying the Observer

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