frankmayer · October 26, 2013 17:30 · Sep 14, 2011 · Sep 14, 2011
diff --git a/gistfile1.aw b/gistfile1.aw
@@ -13,7 +13,7 @@ class DemoSubject implements SplSubject{
 	}
 
 	public function detach(SplObserver $observer){
-		if($idx = array_search($observer, $this->observers, true)){
+		if(($idx = array_search($observer, $this->observers, true)) !== false){
 			unset($this->observers[$idx]);
 		}
 	}
@@ -46,3 +46,8 @@ $subject = new DemoSubject();
 $observer = new DemoObserver();
 $subject->attach($observer);
 $subject->setValue(5);
+$subject->detach($observer);
+$subject->setValue(10);
+
+
+
diff --git a/gistfile1.aw b/gistfile1.aw
@@ -0,0 +1,48 @@
+<?php
+
+class DemoSubject implements SplSubject{
+
+	private $observer, $value;
+
+	public function __construct(){
+		$this->observers = array();
+	}
+
+	public function attach(SplObserver $observer){
+		$this->observers[] = $observer;
+	}
+
+	public function detach(SplObserver $observer){
+		if($idx = array_search($observer, $this->observers, true)){
+			unset($this->observers[$idx]);
+		}
+	}
+
+	public function notify(){
+		foreach($this->observers as $observer){
+			$observer->update($this);
+		}
+	}
+
+	public function setValue($value){
+		$this->value = $value;
+		$this->notify();
+	}
+
+	public function getValue(){
+		return $this->value;
+	}
+}
+
+class DemoObserver implements SplObserver {
+
+	public function update(SplSubject $subject){
+		echo 'This is the value :- '. $subject->getValue();
+	}
+
+}
+
+$subject = new DemoSubject();
+$observer = new DemoObserver();
+$subject->attach($observer);
+$subject->setValue(5);