如何获取 PHP $_GET 数组？
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How to get PHP $_GET array?
提问by faya
Is it possible to have a value in $_GETas an array?
是否可以将值$_GET作为数组？
If I am trying to send a link with http://link/foo.php?id=1&id=2&id=3, and I want to use $_GET['id']on the php side, how can that value be an array? Because right now echo $_GET['id']is returning 3. Its the last id which is in the header link. Any suggestions?
如果我试图发送一个带有 的链接http://link/foo.php?id=1&id=2&id=3，并且我想$_GET['id']在 php 端使用，那么该值怎么可能是一个数组？因为此时echo $_GET['id']正在回归3。它是标题链接中的最后一个 id。有什么建议？
回答by Jordan Running
The usual way to do this in PHP is to put id[]in your URL instead of just id:
在 PHP 中执行此操作的通常方法是id[]输入您的 URL 而不仅仅是id：
http://link/foo.php?id[]=1&id[]=2&id[]=3
Then $_GET['id']will be an array of those values. It's not especially pretty, but it works out of the box.
然后$_GET['id']将是这些值的数组。它不是特别漂亮，但它开箱即用。
回答by Sampson
You could make ida series of comma-seperated values, like this:
您可以创建id一系列以逗号分隔的值，如下所示：
index.php?id=1,2,3&name=john
index.php?id=1,2,3&name=john
Then, within your PHP code, explode it into an array:
然后，在您的 PHP 代码中，将其分解为一个数组：
$values = explode(",", $_GET["id"]);
print count($values) . " values passed.";
This will maintain brevity. The other (more commonly used with $_POST) method is to use array-style square-brackets:
这将保持简洁。另一种（更常与 $_POST 一起使用）方法是使用数组样式的方括号：
index.php?id[]=1&id[]=2&id[]=3&name=john
index.php?id[]=1&id[]=2&id[]=3&name=john
But that clearly would be much more verbose.
但这显然会更加冗长。
回答by Lucas Oman
You can specify an array in your HTML this way:
您可以通过这种方式在 HTML 中指定一个数组：
<input type="hidden" name="id[]" value="1"/>
<input type="hidden" name="id[]" value="2"/>
<input type="hidden" name="id[]" value="3"/>
This will result in this $_GET array in PHP:
这将导致 PHP 中的 $_GET 数组：
array(
'id' => array(
0 => 1,
1 => 2,
2 => 3
)
)
Of course, you can use any sort of HTML input, here. The important thing is that all inputs whose values you want in the 'id' array have the name id[].
当然，您可以在这里使用任何类型的 HTML 输入。重要的是，您希望在 'id' 数组中具有其值的所有输入都具有 name id[]。
回答by ChronoFish
You can get them using the Query String:
您可以使用查询字符串获取它们：
$idArray = explode('&',$_SERVER["QUERY_STRING"]);
This will give you:
这会给你：
$idArray[0] = "id=1";
$idArray[1] = "id=2";
$idArray[2] = "id=3";
Then
然后
foreach ($idArray as $index => $avPair)
{
list($ignore, $value) = explode("=", $avPair);
$id[$index] = $value;
}
This will give you
这会给你
$id[0] = "1";
$id[1] = "2";
$id[2] = "3";
回答by ChristopheD
When you don't want to change the link (e.g. foo.php?id=1&id=2&id=3) you could probably do something like this (although there might be a better way...):
当您不想更改链接（例如foo.php?id=1&id=2&id=3）时，您可能会执行以下操作（尽管可能有更好的方法...）：
$id_arr = array();
foreach (explode("&", $_SERVER['QUERY_STRING']) as $tmp_arr_param) {
$split_param = explode("=", $tmp_arr_param);
if ($split_param[0] == "id") {
$id_arr[] = urldecode($split_param[1]);
}
}
print_r($id_arr);
回答by Gumbo
回答by Michael J. Calkins
Put all the ids into a variable called $ids and separate them with a ",":
将所有 id 放入一个名为 $ids 的变量中，并用“,”分隔它们：
$ids = "1,2,3,4,5,6";
Pass them like so:
像这样传递它们：
$url = "?ids={$ids}";
Process them:
处理它们：
$ids = explode(",", $_GET['ids']);
回答by robjmills
I think i know what you mean, if you want to send an array through a URL you can use serialize
我想我知道你的意思，如果你想通过 URL 发送一个数组，你可以使用序列化
for example:
例如：
$foo = array(1,2,3);
$serialized_array = serialize($foo);
$url = "http://www.foo.whatever/page.php?vars=".urlencode($serialized_array);
and on page.php
并在 page.php
$vars = unserialize($_GET['vars']);
回答by raju
Yes, here's a code example with some explanation in comments:
是的，这是一个代码示例，注释中有一些解释：
<?php
// Fill up array with names
$sql=mysql_query("SELECT * FROM fb_registration");
while($res=mysql_fetch_array($sql))
{
$a[]=$res['username'];
//$a[]=$res['password'];
}
//get the q parameter from URL
$q=$_GET["q"];
//lookup all hints from array if length of q>0
if (strlen($q) > 0)
{
$hint="";
for($i=0; $i<count($a); $i++)
{
if (strtolower($q)==strtolower(substr($a[$i],0,strlen($q))))
{
if ($hint=="")
{
$hint=$a[$i];
}
else
{
$hint=$hint." , ".$a[$i];
}
}
}
}
?>
