Generation functions: handles, uuid, etc

$guid = gen_guid();

$handle = gen_handle();

Returns a GUID using either the preferred extension or a pure PHP implementation

Returns an alphanumeric case senstive handle for use as an ID

• $len Length of the handle

Typically this would be used to generate pseudo-random identifiers with code like this

	do {
		$handle = gen_handle();
	} while(handleExists($handle));