PHP-获取foreach循环中的总行数

我正在开发一个网站，需要在foreach循环中获得数组的总行数

这是我的密码：

$vr = $_GET['vr'];

$dat = file_get_contents("http://example.com"); //this is a datafeed url. 

$exp = explode("\n", $dat);

foreach ($exp as $val) {

if($vr == $val) {
// here I have the code if string is found in array. They were found, but I want to get how many were found.
}

我尝试了

count（）功能，但它显示
111111111

我知道这是可能的，但我不知道如何做到

$num = 0;
foreach ($exp as $val) {
    if($vr == $val) {
        $num++;
    }
}
echo $num;