如何从PHP中的URL获取多个参数?

问题描述：

我有2个变量来发送records.php，"$ id"和"$ row [0]".之后，我想通过$ _Get方法在newrecords.php中使用它们.

I have 2 variables to send records.php, '$id' and '$row[0]". After it, I want to use them in newrecords.php with $_Get method.

这是index.php

Here 's index.php

 echo '<td align="center">'.$row[0].'-)&nbsp;<a href="newrecords.php?mid=&id=' . $id . $row[0] . '"$ >'.  $row[3] . "&nbsp;" . $row[4] .'</a></td>';

出了点问题.我看到了这个网址"newrecords.php?mid =& id = 44" 我想看到像这样的"mid = 4& id = 4"，并且在此之后

There's something going wrong.I see this url "newrecords.php?mid=&id=44" i want to see like this "mid=4&id=4" and after this

newrecords.php

if (isset($_GET['mid']))
    {
        $id = $_GET['mid'];
}

if (isset($_GET['id']))
        {
            $nid = $_GET['id'];
    }

获取它们是正确的方法吗?

Is it right way to get them?

答

您的网址格式不正确.您必须用&分隔每个键/值.如果&是HTML格式，则更好.

You URL is malformed. You have to separate each key/value with a &. And better use & if it's in HTML.

echo('<td align="center">'.$row[0].'-)&nbsp;<a href="newrecords.php?id='.
      $id.'&amp;mid='.$row[0].'"$ >'.$row[3]."&nbsp;".$row[4].'</a></td>');

所以结构是?key1=value1&key2=value2&key3=value3

这样，您可以使用$_GET['key1']和$_GET['key2']和$_GET['key3']来获取它们.

That way you can get them with $_GET['key1'] and $_GET['key2'] and $_GET['key3'].

您使用isset的方式来获取它们，这很棘手，因为可能会设置它们但没有任何价值.您也可以使用empty().它实际上检查值是否为0或为空.因此，如果您不使用0作为记录ID，则可以更好地使用它.而且，如果它们是id，我也将对其进行转换(确保它们是整数)

The way you get them, you are using isset, that's tricky because they might be set but have no value. You can also use empty() for that. It actually checks whether a value is not 0 or empty. So if you don't use 0 as a record id you can better use that. And I also if they are id's I would cast them (making sure they are integers)

$id = (int)$_GET['id'];
if (!empty($id)){ ... }

如何从PHP中的URL获取多个参数?

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