如何添加数组的所有值并除以条目总数？

I have an array $prices = array();. This array contains a number of entries that show a price.

For example € 2.500

My goal is to add all this values and have the average number. But first, to have the € 2.500 in the format of 2500

This is what I know and it is done by using

preg_replace('/[^0-9]/i', '', $variable);

What is a way to accomplish this?

Thank you

You can use array_map to apply that regex to each element.

$avg = array_sum(array_map(function($v){
    return preg_replace('/[^0-9]/i', '', $v);
}, $prices)) / count($prices);

$total = 0;
foreach ($prices as $index => $value)
   $total += preg_replace('/[^0-9]/i', '', $value);

echo "€" . number_format($total);

function getCleanArray($prices)
{
    $pricesCleaned = array();

    foreach ($prices as $value)
    {
        $pricesCleaned.push(preg_replace('/[^0-9]/i', '', $value));
    }

    return $pricesCleaned;
}

After this method call you will get array with numbers which you can manipulate further.