PHP获取数组中重复最多的元素的实现方法

<?php?
/**?
?*??
?* Created on 2014-4-1?
?* @param?? array $array?
?* @param?? int [optional] $length?
?* @return? array?
?*/?
function mostRepeatedValues($array,$length=0){?
??? if(emptyempty($array) or !is_array($array)){?
??????? return false;?
??? }?
??? //1. 计算数组的重复值?
??? $array = array_count_values($array);?
??? //2. 根据重复值 倒排序?
??? arsort($array);?
??? if($length>0){?
??????? //3. 返回前 $length 重复值?
??????? $array = array_slice($array,$length,true);?
??? }?
??? return $array;?
}?
$array = array(1,1,54,3,4,14,7,8,9,12,45,66,5,2,45);?
$counts=mostRepeatedValues($array,5);?
print_r($counts);?
/*输出结果为：
Array?
(?
??? [3] => 5?
??? [4] => 3?
??? [1] => 3?
??? [9] => 2?
??? [45] => 2?
)?
*/?
?>