如何检查php变量

Question

我必须检查PHP-Variables是否为空，我有一些代码，但我想知道它是否可以更快。

丹尼尔

if ($beer1 == "" || $beer2 == "" || $beer3 == "" || $beernumber1 == "" || $beernumber2 == "" || $beernumber3 == "" || $wine1 == "" || $wine2 == "" || $wine3 == "" || $winenumber1 == "" || $winenumber2 == "" || $winenumber3 == "" || $name == "" || $adress == "" || $zipcode == "" || $city == "" || $email == "" || $nieuwsbriefjaofnee == "" || ) {
    # code...
} else {
    # code...
}

Answer 1

您可以使用php为您提供的 empty 函数。见the manual here。

您也不希望在if条件中有这么多条件。您可以使用值创建一个数组，然后循环它。例如：

foreach ($array as $item) {
    if (empty($item)) {
        do_sth();
    }
}

然后根据你的情况展开它......