代码语言：javascript复制
$data =array('a','b','b','d','f','a','b');
$res=array();
foreach ($data as $key => $value) {
$res[$value]=1;
}//Array ( [a] => 1 [b] => 1 [d] => 1 [f] => 1 )
for($i=0;$i<count($data);$i )
{
if($res[$data[$i]]==1)
{
for($j=$i 1;$j<count($data);$j )
{
if($data[$j]==$data[$i])
{
$res[$data[$i]] =1;
}
}
}
}
/*Array
(
[a] => 2
[b] => 3
[d] => 1
[f] => 1
)*/
arsort($res);
foreach ($res as $key => $value) {
$desc[]=$key;
}
print_r($desc);
/*Array
(
[0] => b
[1] => a
[2] => f
[3] => d
)*/
$a=array("A","Cat","Dog","A","Dog");
print_r(array_count_values($a));
Array
(
[A] => 2
[Cat] => 1
[Dog] => 2
)
