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Check 10- and 11- digit phone numbers

/ Published in: PHP
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Return a pure 10-digit phone number if the number given is 10 digits or 11 digits.

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  1. function is_phone($phone) {
  2.     $phone = preg_replace('/[^\d]+/', '', $phone);
  3.     $num_digits = strlen($phone);
  4.     if($num_digits == 10 || $num_digits == 11) {
  5.         return $phone;
  6.     } else {
  7.         return FALSE;
  8.     }
  9. }

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