如何计算每个循环内的键？

Question

    function findKey($array, $keySearch) {
        $count = 0;
        foreach ($array as $key => $item) {
            if (stripos($key, $keySearch) !== false){
            $count++;
            echo "<li>".$key."</li>";
                }
            if (is_array($item)){
               findKey($item, $keySearch); 
            }
        } 
        echo "Total number of keys: ".$count;       
    }

echo findKey($array, $keySearch);

我尝试计算每个循环中的密钥。但我的结果是

香蕉

苹果

橙

密钥总数：0010101000

我做错了什么？

Answer 1

   function findKey($array, $keySearch) {
        global $count;
        foreach ($array as $key => $item) {
            if (stripos($key, $keySearch) !== false){
            $count++;
            echo "<li>".$key."</li>";
                }
            if (is_array($item)){
               findKey($item, $keySearch); 
            }
        } 
    }

$count = 0;
findKey($array, $keySearch);
echo "Total number of keys: ".$count;