'Phone Numbers - South Africa', 'error' => '"%value" is not a valid South African phone number!
South African phone numbers should ...', ); } /** * Verifies that $phonenumber is a valid South African phone number * * @param string $phonenumber * @return boolean Returns boolean FALSE if the phone number is not valid. */ function valid_za_phone_number($phonenumber) { $phonenumber = trim($phonenumber); // define regular expression $regex = '/^((?:\+27|27)|0)[ ]*((\d{2})(-| )?(\d{3})(-| )?(\d{4})|(\d{2})( |-)(\d{7}))$/'; // return true if valid, false otherwise return (bool) preg_match($regex, $phonenumber); } /** * Convert a valid South African phone number into standard ... format * * @param $phonenumber must be a valid ... digit number (with optional international prefix) * */ function format_za_phone_number($phonenumber, $field) { // define regular expression $regex = '/^((?:\+27|27)|0)[ ]*((\d{2})(-| )?(\d{3})(-| )?(\d{4})|(\d{2})( |-)(\d{7}))$/'; // get digits of phone number preg_match($regex, $phonenumber, $matches); /* drupal_set_message('$matches[1] = ' . $matches[1], 'error'); drupal_set_message('$matches[2] = ' . $matches[2], 'error'); drupal_set_message('$matches[3] = ' . $matches[3], 'error'); drupal_set_message('$matches[4] = ' . $matches[4], 'error'); drupal_set_message('$matches[5] = ' . $matches[5], 'error'); drupal_set_message('$matches[6] = ' . $matches[6], 'error'); drupal_set_message('$matches[7] = ' . $matches[7], 'error'); drupal_set_message('$matches[8] = ' . $matches[8], 'error'); */ if ($field['phone_country_code']) { $phonenumber = '+27' . ' ' . $matches[3] .'-'. $matches[5] .'-'. $matches[7]; } else { $phonenumber = $matches[3] .'-'. $matches[5] .'-'. $matches[7]; } return $phonenumber; }