Is there a way in PHP to check for specific characters (only A-Z, a-z, and umlauts) in addition to the character count validation?

To check for specific characters (A-Z, a-z, and umlauts) in addition to character count validation in PHP, you can use regular expressions. By defining a pattern that includes these specific characters, you can ensure that the input string only contains the desired characters. You can then combine this with a character count validation to create a comprehensive input validation check. 

$input = "ÄbcDEF";
if (preg_match('/^[A-Za-zÄäÖöÜüß]+$/', $input) && strlen($input) <= 10) {
    echo "Input is valid.";
} else {
    echo "Input is invalid.";
}

Keywords

PHP character validation character count regular expressions umlauts

Related Questions