Question

How can I check if a string is at least one letter and one digit in PHP? Can have special characters, but basically needs to have one letter and one digit.

Examples:

$string = 'abcd'   //Return false
$string = 'a3bq'   //Return true
$string = 'abc#'   //Return false
$string = 'a4#e'   //Return true

Thanks.

Answer 1

Try this

if (preg_match('/[A-Za-z]/', $string) & preg_match('/\d/', $string) == 1) {
    // string contains at least one letter and one number
}