php 如何通过 URL 传递变量的多个值
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How to pass multiple values of a variable through a URL
提问by mickburkejnr
I've an application that I'm building, and I'm stuck at a certain point.
我有一个正在构建的应用程序，但我遇到了某个问题。
I'm trying to pass a variable that has multiple values. So my URL will look like:
我正在尝试传递一个具有多个值的变量。所以我的网址看起来像：
localhost/report.php?variable=value1, value2, value3
Problem is I'm not sure how I can do this. The variables are to be used to retrieve data from a database. I'm using PHP and no Javascript.
问题是我不确定如何做到这一点。这些变量用于从数据库中检索数据。我正在使用 PHP 而没有 Javascript。
Any help would be great!
任何帮助都会很棒！
EDIT:
Here is the HTML I have in my page where the variables are selected:
编辑：
这是我在页面中选择变量的 HTML：
<select name="types" size="19" multiple>
<option value="all" selected>All Types</option>
<option value="book" selected>Books</option>
<option value="cd" selected>CD</option>
</select>
So a user could select Books and CD, and I would need to pass these two values in the "types" variable.
所以用户可以选择 Books 和 CD，我需要在“types”变量中传递这两个值。
采纳答案by DACrosby
As noted at https://stackoverflow.com/a/2407401/1265817, you can use this method.
如https://stackoverflow.com/a/2407401/1265817 所述，您可以使用此方法。
If you want PHP to treat $_GET['select2'] as an array of options just add square brackets to the name of the select element like this: <select name="select2[]" multiple …
如果您希望 PHP 将 $_GET['select2'] 视为一个选项数组，只需在 select 元素的名称中添加方括号，如下所示： <select name="select2[]" multiple …
Then you can acces the array in your PHP script
然后你可以访问你的 PHP 脚本中的数组
<?php
header("Content-Type: text/plain");
foreach ($_GET['select2'] as $selectedOption)
echo $selectedOption."\n";
回答by jp2code
Use &
用 &
localhost/report.php?variable=value1&val2=value2&val3=value3
Is that what you are after?
这就是你所追求的吗？
回答by Chris
There is a simple way to do this in PHP by calling http_build_query()and pass your values as an indexed array. You would do something like:
在 PHP 中有一种简单的方法可以通过调用http_build_query()和传递您的值作为索引数组来执行此操作。你会做这样的事情：
$value_array = array('types' => array('book', 'cd'));
$query = http_build_query($value_array);
Then generate the url using $query.
然后使用$query.
回答by DACrosby
I think you have your URL correct
我认为您的网址正确
localhost/report.php?variable=value1,value2,value3
Then use PHP to get all of the values on the report.php page
然后使用PHP获取report.php页面上的所有值
$variable = explode(",", $_GET["variable"]);
// Output
$variable[0] = "value1";
$variable[1] = "value2";
$variable[2] = "value3";
回答by WayneC
try localhost/report.php?variable[]=value1&variable[]=value2will give you an array in php
尝试localhost/report.php?variable[]=value1&variable[]=value2会给你一个 php 数组
回答by MAMProgr
You can use serializelike:
您可以使用序列化，如：
echo '<a href="index.php?var='.serialize($array).'"> Link </a>';
and get data using unserializelike:
并使用反序列化获取数据，例如：
$array= unserialize($_GET['var']);
serialize function giving you storable (string) version of array type, and can be restored by unserialize function.
序列化函数为您提供数组类型的可存储（字符串）版本，并且可以通过反序列化函数恢复。
