从数组中过滤字符串值以仅格式化数字

Question

The problem is, I have an array that I get from this query :

$secimKrm   =   ("SELECT * FROM kurumlar
INNER JOIN veri_2012_09
ON kurumlar.krmKod  =  veri_2012_09.krmKod
WHERE kurumlar.krmKod = '$krmKod'");
$sonucKrm   =   $mysqliKrm->query($secimKrm);
$row    =   $sonucKrm->fetch_assoc();

"kurumlar" consists of strings and "veri_2012_09" consists of big integers. There are almost 35 columns in "veri_2012_09" and I don't want to format numbers one by one.

When I try to format numbers in the array "$row" I use this:

foreach ($row as $key => $val) {
$row[$key] = number_format($val, 0, ',', '.');
}

It works, but it causes errors, (Warning: number_format() expects parameter 1 to be double, string given in...) because my array has strings in it. How can I exclude the strings before formatting the numbers?

Answer 1

Perform is_numeric check like:

foreach ($row as $key => $val) {
    if (is_numeric($val)) {
        $row[$key] = number_format($val, 0, ',', '.');
    }
}

So your question shouldn't be "How can I exclude the strings", but "How can I include only strings"