注册电话号码

Question

How do i change any of the following to just numbers

1-(999)-999-9999 
1-999-999-9999
1-999-9999999
1(999)-999-9999
1(999)999-9999

i want the final product to be 19999999999

Answer 1

The easiest way would be to strip everything out of your string that's not a number and then see if you end up with a 10 digit number (or 11 if you're making the 1 mandatory):

$string = "1-(999)-999-9999";
$number = preg_replace('/[^0-9]/', "", $string); // results in 19999999999
if (strlen($number) == 11)
{
  // Probably have a phone number
}

Answer 2

try

preg_replace('\D', '', $string);

This will filter out any non digits.

Answer 3

你真的不需要正则表达式......

$number = str_replace(array('-', '(', ')'), '', $number);

Answer 4

preg_replace('[\D*]', '', '1-(999)-999-9999');