[PHP]References

	
		
	
	
	";
	// returns 1/2

	$a = 1;
	$b =& $a;
	$b = 2;
	echo "a:{$a} / b: {$b}
";
	// returns 2/2
	
	unset($b);
	echo "a:{$a} / b: {$b}
";
	
	?>
	

a:1 / b: 2
a:2 / b: 2

( ! ) Notice: Undefined variable: b in D:\wamp\www\php\references.php on line 21
Call Stack
#	Time	Memory	Function	Location
1	0.0005	672904	{main}( )	..\references.php:0

a:2 / b: