使用PHP和正则表达式的自定义URL路由 [英] Custom URL routing with PHP and regex

问题描述

我正在尝试创建一个非常简单的URL路由，我的思考过程是这样的:

I'm trying to create a very simple URL routing, and my thought process was this:

• 首先检查所有静态URL
• 然后检查数据库URL
• 然后返回404(如果不存在)

静态URL当然很容易实现，但是我正在尝试找出动态URL的最佳方法.我希望不必设置静态前缀，尽管知道这样做会使编写代码变得容易得多.

The static URLs are easy to do of course, but I'm trying to figure out the best way to do dynamic ones. I would prefer not to have to set a static prefix, despite knowing that it would make this a lot easier to code.

这是我目前拥有的:

$requestURL = $_SERVER['REQUEST_URI'];

if ($requestURL == '/') {
    // do stuff for the homepage
}

elseif ($requestURL == '/register') {
    // do stuff for registration
}

// should match just "/some-unique-url-here"
elseif (preg_match("/([\/A-Za-z0-9\-]+)/",$requestURL)) { 
    // query database for that url variable
}

// should match "/some-unique-url/and-another-unique-url"
elseif (preg_match("(^\/[A-Za-z0-9\-]+\/[A-Za-z0-9\-]+)/",$requestURL)) {
    // query database for first and second variable
}

else {
    // 404 stuff
}

我的问题是，如果我具有"/register" URI，它将与第二个elseif语句以及regex语句匹配.但我想避免不得不从正则表达式中专门排除每个静态URL，例如:

My problem is that if I have "/register" URI, it will match the second elseif statement as well as the regex statement. But I want to avoid having to specifically exclude each static URL from regex statement, such as this:

// should match just "/some-unique-url-here"
elseif ((preg_match("/([\/A-Za-z0-9\-]+)/",$requestURL)) &&
    ($requestURL !== '/register') &&
    ($requestURL !== '/')) { 
    // query database for that url variable
}

解决此问题的最简单方法是什么?我可能会喜欢15-20个静态URL，因此专门排除所有这些URL将非常笨拙.

What's the easiest way to solve this problem? I'll probably have like 15-20 static URLs, so specifically excluding all of them would be very clunky.

推荐答案

您的问题不存在.如果第一个elseif ($requestURL == '/register')匹配，则同一级别上的所有后续elseif都不会得到评估.

Your problem does not exist. If the first elseif ($requestURL == '/register') matches, all subsequent elseifs on the same level won't get evaluated.

您已经做对了，只需确保首先进行字符串比较(==).

You're already doing it right, just make sure you do the string comparisons (==) first.

另一方面，请不要重新发明轮子.

On another note, don't reinvent the wheel.

• https://github.com/bramus/router
• http://toroweb.org/
• http://zaphpa.org/

• https://github.com/bramus/router
• http://toroweb.org/
• http://zaphpa.org/

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