使用 php 从 URL 字符串中捕获值

发布于 2024-12-19 05:07:33 字数 349 浏览 3 评论 0原文

我需要从字符串中提取变量的值，该字符串恰好是一个 URL。字符串/url 作为单独的 php 查询的一部分加载，而不是浏览器中的 url。

网址将如下所示：

index.php?option=com_content&view=article&catid=334:golfeq&id=2773:xcelsiors&Itemid=44

How can I always find &捕获 id 的值（在本例中为 2773）？

我已经阅读了几个示例，但我尝试捕获正在浏览器中查看的当前页面的 id 值，而不是 URL 字符串。

谢谢

原文

I need to extract a variable's value from a string, which happens to be a URL. The string/url is loaded as part of a separate php query, not the url in the browser.

The url's will look like:

index.php?option=com_content&view=article&catid=334:golfeq&id=2773:xcelsiors&Itemid=44

How can I always find & capture the value of the id which in this example is 2773?

I read several examples already, but what I've tried captures the id value of the current page which is being viewed in the browser, and not the URL string.

Thanks

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梦幻之岛 2024-12-26 05:07:33

您正在寻找组合或 parse_url （这将为您隔离查询字符串）和 parse_str（它将解析变量并将它们放入一个数组中）。

例如：

$url = 'index.php?option=com_content&view=article&catid=334:golfeq&id=2773:xcelsiors&Itemid=44';

// This parses the url for the query string, and parses the vars from that
// into the array $vars (which is created on the spot).
parse_str(parse_url($url, PHP_URL_QUERY), $vars);

print_r($vars); // see what's in there

// Parse the value "2773:xcelsiors" to isolate the number
$id = reset(explode(':', $vars['id']));

// This will also work:
$id = intval($vars['id']);

echo "The id is $id\n";

查看实际操作。

You are looking for a combination or parse_url (which will isolate the query string for you) and parse_str (which will parse the variables and put them into an array).

For example:

$url = 'index.php?option=com_content&view=article&catid=334:golfeq&id=2773:xcelsiors&Itemid=44';

// This parses the url for the query string, and parses the vars from that
// into the array $vars (which is created on the spot).
parse_str(parse_url($url, PHP_URL_QUERY), $vars);

print_r($vars); // see what's in there

// Parse the value "2773:xcelsiors" to isolate the number
$id = reset(explode(':', $vars['id']));

// This will also work:
$id = intval($vars['id']);

echo "The id is $id\n";

See it in action.

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一杯敬自由 2024-12-26 05:07:33

您可以使用 parse_str

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陪我终i 2024-12-26 05:07:33

你可以使用parse_url来解析URL！

但您可以使用直接提取 ID 变量的数字：

$url = 'index.php?option=com_content&view=article&catid=334:golfeq&id=2773:xcelsiors&Itemid=44';
$id = preg_replace("/^.*[&?]id=([0-9]+).*$/",'$1',$url);
echo $id;

You can use parse_url to parse URLs!

But you can use, to extract directly the numbers of ID variable:

$url = 'index.php?option=com_content&view=article&catid=334:golfeq&id=2773:xcelsiors&Itemid=44';
$id = preg_replace("/^.*[&?]id=([0-9]+).*$/",'$1',$url);
echo $id;

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