[英]PHP Matching URI to Pattern
I am working on a simple front controller, mainly for learning purposes. 我正在研究一个简单的前端控制器,主要用于学习目的。
I like the way Symfony does routing, having patterns in your map like this: /news/{category}/{id}
and passing category and id variables to the controller. 我喜欢Symfony做路由的方式,在你的地图中有这样的模式:
/news/{category}/{id}
并将类别和id变量传递给控制器。 But my problem is -because of my incompetence of using RegEx - I don't know, how to match the patterns to the URI. 但我的问题是 - 因为我无法使用RegEx - 我不知道,如何将模式匹配到URI。
How should I match 我该怎么配?
/news/{category}/{id}
to 至
/news/tech/5784
Should I allow patterns like this: /news/*
- where *
matches everything? 我应该允许这样的模式:
/news/*
- 其中*
匹配所有内容? Or where the variables are mixed with some trash, like this /news/{category}_ex/14{id}
? 或者变量与某些垃圾混合在一起,例如
/news/{category}_ex/14{id}
?
Getting the variables and values are not much of the problem, but writing a regular expression for matching is. 获取变量和值并不是问题,但是为匹配编写正则表达式是。
Thank you for your help in advance 提前谢谢你的帮助
The simplest would be to use (regex) named sub-patterns . 最简单的是使用(正则表达式)命名的子模式 。
$regex = '#^/news/(?P<category>[a-z0-9]+)/(?P<id>[0-9]+)$#';
$path = '/news/tech/5784';
if (preg_match($regex, $path, $matches))
{
$matches['category'] === 'tech';
$matches['id'] === '5784';
}
You're most likely looking for PHP Subpatterns 您最有可能寻找PHP子模式
$str = '/news/tech/5784';
if (preg_match('~^/news/(?<category>[^/]+)/(?<id>[^/]+)~', $str, $match))
echo $match['category'] . " - " . $match['id'] . "\n";
tech - 5784
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