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public function checkZipCode($Countrycode, $Codepostal){

$sites = array("AD", "BT", "IM","GY","JE","HS","ZE");

switch ($Countrycode)

{

case "FR":

if ($Codepostal >= 20000 && $Codepostal <= 20999)

{

retutn false;

}

else

{

return true;

}

break;

case "ES":

if (($Codepostal >= 35000 && $Codepostal <= 35999)||($Codepostal >= 38000 && $Codepostal <= 38999)||($Codepostal >= 51000 && $Codepostal <= 51999)||($Codepostal >= 52000 && $Codepostal <= 52999))

{

retutn false;

}

elseif(int(substr($Codepostal,0,4))>= 7000 && int(substr($Codepostal,0,4))<= 7999)

{

retutn false;

}

else{

return true;

}

break;

case "AD":

if (in_array(substr($Codepostal,0,2)),$sites)

{

retutn false;

}

else

{

return true;

}

break;

case "GB":

if (in_array(substr($Codepostal,0,2)),$sites)

{

retutn false;

}

else

{

return true;

}

if (in_array(substr($Codepostal,0,2)),$sites)

{

retutn false;

}

else

{

return true;

}

if (in_array(substr($Codepostal,0,2)),$sites)

{

retutn false;

}

else

{

return true;

}

if (in_array(substr($Codepostal,0,2)),$sites)

{

retutn false;

}

else

{

return true;

}

if (in_array(substr($Codepostal,0,2)),$sites)

{

retutn false;

}

else

{

return true;

}

if (in_array(substr($Codepostal,0,2)),$sites)

{

retutn false;

}

else

{

return true;

}

break;

case "PT":

if (int(substr($Codepostal,0,4))>= 9000 && int(substr($Codepostal,0,4))<= 9400)

{

retutn false;

}

elseif (int(substr($Codepostal,0,4))>= 9500 && int(substr($Codepostal,0,4))<= 9999)

{

retutn false;

}

else{

return true;

}

break;

case "GI":

retutn false;

break;

}

}

代码重构版本

public function checkZipCode($Countrycode, $Codepostal){

$sites = array("AD", "BT", "IM","GY","JE","HS","ZE");

switch ($Countrycode)

{

case "FR":

if ($Codepostal >= 20000 && $Codepostal <= 20999)

{

retutn false;

}

else

{

return true;

}

break;

case "ES":

if (($Codepostal >= 35000 && $Codepostal <= 35999)||($Codepostal >= 38000 && $Codepostal <= 38999)||($Codepostal >= 51000 && $Codepostal <= 51999)||($Codepostal >= 52000 && $Codepostal <= 52999))

{

retutn false;

}

elseif(int(substr($Codepostal,0,4))>= 7000 && int(substr($Codepostal,0,4))<= 7999)

{

retutn false;

}

else{

return true;

}

break;

case "AD":

if (in_array(substr($Codepostal,0,2)),$sites)

{

retutn false;

}

else

{

return true;

}

break;

case "GB":

if (in_array(substr($Codepostal,0,2)),$sites)

{

retutn false;

}

else

{

return true;

}

break;

case "PT":

if (int(substr($Codepostal,0,4))>= 9000 && int(substr($Codepostal,0,4))<= 9400)

{

retutn false;

}

elseif (int(substr($Codepostal,0,4))>= 9500 && int(substr($Codepostal,0,4))<= 9999)

{

retutn false;

}

else{

return true;

}

break;

case "GI":

retutn false;

break;

}

}

优化版本

/**

* 偏远地区邮编过滤

* @param $countryCode

* @param $postCode

* @return bool

*/

public function checkPostCode($countryCode, $postCode)

{

switch (strtoupper($countryCode)) {

case "FR":

if ($postCode >= 20000 && $postCode <= 20999) {

return false;

} else {

return true;

}

break;

case "ES":

if (($postCode >= 35000 && $postCode <= 35999) || ($postCode >= 38000 && $postCode <= 38999) || ($postCode >= 51000 && $postCode <= 51999) || ($postCode >= 52000 && $postCode <= 52999)) {

return false;

} elseif (intval(substr($postCode, 0, 4)) >= 7000 && intval(substr($postCode, 0, 4)) <= 7999) {

return false;

} else {

return true;

}

break;

case "AD":

if (strtoupper(substr($postCode, 0, 2)) == 'AD') {

return false;

} else {

return true;

}

break;

case "GB":

$postCodePrefix = array("BT", "IM", "GY", "JE", "HS", "ZE");

if (in_array(strtoupper(substr($postCode, 0, 2)), $postCodePrefix)) {

return false;

} else {

return true;

}

break;

case "PT":

if (intval(substr($postCode, 0, 4)) >= 9000 && intval(substr($postCode, 0, 4)) <= 9400) {

return false;

} elseif (intval(substr($postCode, 0, 4)) >= 9500 && intval(substr($postCode, 0, 4)) <= 9999) {

return false;

} else {

return true;

}

break;

case "GI":

return false;

break;

default :

return true;

break;

}

}