if$price1 i want if price1 is number

You can use the is_numeric() function to check if $price1 is a number. If it is, you can perform the desired action. Here's an example:

if (is_numeric($price1)) {
    // Code to execute if $price1 is a number
} else {
    // Code to execute if $price1 is not a number
}

Replace the comment placeholder with your actual code.