$this->assertEquals( true, ctype_digit( $id ), "UID made of digit characters" );
$this->assertLessThanOrEqual( $digitlen, strlen( $id ),
"UID has the right number of digits" );
$this->assertEquals( true, ctype_digit( $id ), "UID made of digit characters" );
$this->assertLessThanOrEqual( $digitlen, strlen( $id ),
"UID has the right number of digits" );