<?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, 0, $length, true);
}
return $array;
}
$array = array(1, 1, 1, 54, 3,4, 3,4, 3, 14, 3,4, 3,7,8,9,12,45,66,5,7,8,9,2,45);
$counts=mostRepeatedValues($array,5);
print_r($counts);
/*输出结果为：
Array
(
[3] => 5
[4] => 3
[1] => 3
[9] => 2
[45] => 2
)
*/
?>