Question

I have a bit of code which takes the URL that someone chooses when signing up with my app and checks it. But I’d like to add the following restraints to it.

• Must be at least 3 letters
• No capitol letters
• No certain words “admin, support, etc…”

Here’s what I have so far – but it’s only looking for special letters now:

elseif($action == "validate"){

    $option = $_GET["option"];

    $value = $_GET["value"];

    switch($option){

    case "URL":             

$sql = mysql_select_db($value,$connect);
if(preg_match ( "@[^A-Za-z0-9]+@i", $value ) > 0) { $valid = "FALSE";   continue; }

$sql == 1 ?  $valid = "FALSE" : $valid = "TRUE";

}

Answer 1

elseif($action == "validate"){

    $option = $_GET["option"];

    $value = $_GET["value"];

    switch($option){

    case "URL":             

    $sql = mysql_select_db($value,$connect);
    if(preg_match ( "@[^A-Za-z0-9]+@i", $value ) > 0) { $valid = "FALSE";   continue; }
    if(strlen($value) <= 3) { $valid = "FALSE";   continue; } //less than 3 char
    if(strstr($value, 'admin')) { $valid = "FALSE";   continue; }
      //.. the same for your other words

    $sql == 1 ?  $valid = "FALSE" : $valid = "TRUE";

}