Input validation

[Percadan]

Looking for some examples of form input validation (ie. correct email format, correct phone number format, etc.)

[dalecosp]

Here's a fairly easy one:

function ValidateInput($var, $type) {

    trim($var);
    if ($type=="name") { $Pattern = "^[A-Z][c]?[A-Z]?[a-z]+[a-z]$"; }
    elseif ($type=="email") { $Pattern = "^([0-9a-z]+)([0-9a-z\._-]+)@([0-9a-z\._-]+)\.([0-9a-z]+)"; }
    elseif ($type=="phone") { $Pattern = "^([0-9]{3})-([0-9]{3})-([0-9]{4})"; }
    $valid=ereg($Pattern, $var);
    return $valid;

} # end of Function

🙂

[razz]

Attached is a file I use as an included file. It validates many things and in turn uses other files but it will give some ideas.

razz

[greg252]

I know this is a php forum, but wouldn't it be better to use javascript to validate e-mail addresses and such? Put the wok on the client not the server.

[razz]

Not if you want to guarentee that the data passes validation. Javascript can be turned off because of the fact that is client based. You would loose control. The general purpose of validation is make sure the input meets requirements regardless of the client.

razz