检查多个字符串是否为空 [英] Check if multiple strings are empty

问题描述

可能重复:
更简洁的方法检查数组是否仅包含数字(整数)
PHP检查是否为空字段

Possible Duplicate:
More concise way to check to see if an array contains only numbers (integers)
PHP checking if empty fields

我有一个提交10个字段的表单，应该填写其中7个，这就是我现在在PHP中检查它的方式:

I have form that submits 10 fields, and 7 of them should be filled, here is how i chek it now in PHP:

if (!$name || !$phone || !$email || !$mobile || !$email || !$state || !$street || !  $city) {
        echo '<div class="empty_p">You have empty fields!!!</div>';}
else{
        //process order or do something
}

我的问题是:还有更简单的方法吗?因为有时候我还要检查更多的字符串(12-15)

My question is: is there more simple way to do this? Because sometimes I have even more strings to check (12-15)

推荐答案

<input type="text" name="required[first_name]" />
<input type="text" name="required[last_name]" />
...


$required = $_POST['required'];
foreach ($required as $req) {
   $req = trim($req);
   if (empty($req))
      echo 'gotcha!';
}

/*更新*/

好！伙计们，容易...

OK! guys, easy...

您可以使它更安全，就像类型转换一样，就像我们程序员为处理即将到来的数据(例如$id = (int) $_GET['id']，$username = (string) addslashes($_POST['username'])等)所要做的一样……

You can make it more secure, just with type casting as all we programmers do for out coming data, like $id = (int) $_GET['id'], like $username = (string) addslashes($_POST['username']) and so on...;

$required = (array) $_POST['required'];

然后，无论来自发布字段的内容是什么，这些代码都只是在寻找所需内容. 这就对了！嗯...

And then, what ever comes from post fields let them come, this code just seek what it need. That is it! Uhh...

这篇关于检查多个字符串是否为空的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！