7. Variable Variable and Static Variable

Variable Variable:

<?php
	$bd="Bangladesh";
	$$bd="Dhaka";
	echo $Bangladesh;
?>

Static variable:Normally, when a function is completed/executed, all of its variables are deleted. However, sometimes we want a local variable NOT to be deleted. We need it for a further job. A static variable will not lose its value when the function exits and will still hold that value should the function be called again

<?php
	function myTest() {
		static $x = 0;
		echo $x;
		$x++;
	}
	myTest();
	myTest();
	myTest();
?>
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