The correct use of switch case to test a variable's type. Correction for NullIsArray.php

SwitchCaseVarTypeTest.php

<?php

$dummy= [        
	'Alpha' => null,
	'Beta' => null,
	'Charlie' => null
];
switch (gettype($dummy['Alpha'])) {
	case 'array' :
		echo 'Alpha, according to this switch statement, is Array';
		break;
    	case 'double' : 
	case 'integer' :
		echo 'Alpha, according to this switch statement, is Numeric';
		break;
	default: 
		echo 'Alpha, according to this switch statement, is something else';
}