php统计数组中相同元素个数的方法

$arr = array(
	'a'=>'java',
	'b'=>'php',
	'c'=>'java',
);
$arr = array_values($arr);  //返回数组所有的值，并建立数字索引
$arr1 = array();
 
foreach ($arr as $a){
	if (!isset($arr1[$a])){
		$arr1[$a] = 1;
	}else {
		$arr1[$a]++;
	}
}
 
echo "";
foreach($arr1 as $k=>$val){
	echo "";
}
echo "
$k
$val
";

$a=array("Cat","Dog","Horse","Dog");

print_r(array_count_values($a));