PHP array deduplication function code example

/**
* Function to remove duplicate values ​​from array
* by bbs.it-home.org
*/
function array_assoc_unique($arr, $key) {
 $tmp_arr = array();
 foreach($arr as $k => $v) {
 if(in_array($v[$key], $tmp_arr)) {
 unset($arr[$k]);
 } else {
 $tmp_arr[] = $v[$key ];
 }
 }
 sort($arr);
 return $arr;
}
//Call the example to remove duplicate values ​​in the data
$aa = array(
 array('id ' => 123, 'name' => 'Scripting School'),
 array('id' => 123, 'name' => 'php programming'),
 array('id' => 124, 'name' => 'Programmer's Home'),
 array('id' => 125, 'name' => 'Self-taught'),
 array('id' => 126, 'name' => 'Programmer's Home')
);
$key = 'name';
array_assoc_unique(&$aa, $key);
print_r($aa);
?>