检查字符串是否为数字，但不包括检查中的欧元符号

Question

I want to be able to add products with a price but also with just a text. So I build a check to see if the string is numeric. My problem is that I show the price like this:

if($product['xreference'] != ''){
    $price = '€ '.strip_tags($product['xreference']);
  }else{
    $price = '';
  }

So how can I check if $price is numeric but exclude the euro sign in the check?

Answer 1

Assuming you want to do is_numeric check after the written line of code in question, One way is :

$priceTest = str_replace('€', '', $price);

$result = is_numeric($priceTest);

if ($result) {
    echo " it is numeric";
}