Question

I have question that seems simple to you all but can’t really get it. encounter warning till now.

May I know how can i accept a string with integers 0-9 and alpha a-zA-Z but minimum 5 characters and maximum 15 characters with preg_match. Thanks

Answer 1

Try this:

preg_match('/^[0-9a-zA-Z]{5,15}$/D', $str)

Here ^ marks the begin and $ the end of the string (the D modifier is to let $ match only the end of the line without an ending line break). That means the whole string must be matched by the pattern [0-9a-zA-Z]{5,15} that describes a sequence of 5 to 15 characters of the character class [0-9a-zA-Z].