preg function

Hello,

I have this function to validate phone numbers. Only digits...

function validatePhoneNumber($number){
    $formats = array(
        '##########',
        '#########',
        '#####',
        '######',
    );
       
    $format = trim(preg_replace("/[0-9]/", '#', $number));
    return (in_array($format, $formats)) ? true : false;
}

Code (markup):

The problem is /[0-9]/ .

If I put 0 in argument, the function in not work. I test with /[^0-9]/ but no result....

How to validate number if the phone starts with zero or contains zero?

Thanks.

 

I wouldn't use a regex for that.

function validatePhoneNumber($number){
	$number = trim($number);
	$length = count($number);
	return is_numeric($number) && (
		($length == 5) ||
		($length == 6) ||
		($length == 9) ||
		($length == 10)
	);
}

Code (markup):

Since that's all your testing for -- is it a number and is it a valid length.

 

is_numeric() is a little funny, though.

var_dump(is_numeric('0xfffffffff'));
// bool(true)

PHP:

I would probably use ctype_digit() instead. (And I'm pretty sure you meant "strlen" instead of "count".)

 

Right on both counts -- I'm switching languages WAY too much lately. I almost posted the answer in Z80 assembly given where my head's at right now

So that should have been:

function validatePhoneNumber($number){
	$number = trim($number);
	$length = strlen($number);
	return ctype_digit($number) && (
		($length == 5) ||
		($length == 6) ||
		($length == 9) ||
		($length == 10)
	);
}

Code (markup):

 

Haha, that would have been kinda awesome!