php array_unique example of removing duplicate values ​​from a one-dimensional array

/**
 * Remove duplicate elements from the array
 * link: bbs.it-home.org
 * date: 2013/2/25
*/
$input = array ("1" => "Apple", "Orange", "Yali", "a" => " Orange", "Banana", "Apple") ;
$result = array_unique ( $input ) ;
print_r ( $result ) ;
?>

Output result: array ( [1] => apple [2] => orange [3] => pear [4] => banana )