Create random numbers

This snippet will return a string containing random numbers. It takes 1 parameter which should be an integer. This will be the length of your string. If the parameter is not an integer, it will return false!

Example of use:

echo create_random_numbers(5);

function create_random_numbers($length)
{
	if (!is_int($length)) return false;

	mt_srand((double)microtime()*1000000);

	$random = '';

	for ($a = 0; $a < $length; $a++)
	{
		$random .= mt_rand(0, 9);
	}

	return $random;
}

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