PHP自定义URL路由

我正在开发一个定制的PHP URL路由类，但是我需要一些关于正则表达式的帮助。 我希望用户添加如下路由：

$router->addRoute('users/:id', 'users/view/');

public function addRoute($url, $target)
{
    $this->routes[] = ['url' => $url, 'target' => $target];
}

public function routes()
{
    foreach($this->routes as  $route) {

        $pattern = $route['url'];

        // Check if the route url contains :id
        if (strpos($route['url'], ':id'))
        {
            // Build the pattern
            $pattern = str_replace(':id','(\d+)', $pattern);
        }

        echo $pattern . '<br />' . $this->_url;

        if (preg_match_all('~' . $pattern . '~u', $this->_url, $matches))
        {
            $this->url_parts = explode('/', $route['target']);
            $this->_params = $matches;
        }
    }
}

private function routes()
{
    // Loop through the routes
    foreach($this->routes as  $route) 
    {
        // Set the pattern to the matching url
        $pattern = $route['url'];

        // Check if the pattern contains :id
        if (strpos($route['url'], ':id'))
        {
            // Build the pattern
            $pattern = str_replace(':id','([0-9]+)', $pattern);
        }

        // Check if the requested url matches the pattern
        if (preg_match_all('~^' . $pattern . '+$~', $this->_url, $matches))
        {
            // If so, set the url_parts var
            $this->url_parts = explode('/', $route['target']);

            // Remove the first index of the matches array
            array_shift($matches);

            // Set the params var
            $this->_params = $matches;
        }
    }
}

添加路由后，脚本需要检查请求的URL是否与定义的格式（users/：id）匹配，并调用users控制器的view方法。它还需要将id作为参数传递给view方法

我的addRoute方法如下所示：

$router->addRoute('users/:id', 'users/view/');

public function addRoute($url, $target)
{
    $this->routes[] = ['url' => $url, 'target' => $target];
}

public function routes()
{
    foreach($this->routes as  $route) {

        $pattern = $route['url'];

        // Check if the route url contains :id
        if (strpos($route['url'], ':id'))
        {
            // Build the pattern
            $pattern = str_replace(':id','(\d+)', $pattern);
        }

        echo $pattern . '<br />' . $this->_url;

        if (preg_match_all('~' . $pattern . '~u', $this->_url, $matches))
        {
            $this->url_parts = explode('/', $route['target']);
            $this->_params = $matches;
        }
    }
}

private function routes()
{
    // Loop through the routes
    foreach($this->routes as  $route) 
    {
        // Set the pattern to the matching url
        $pattern = $route['url'];

        // Check if the pattern contains :id
        if (strpos($route['url'], ':id'))
        {
            // Build the pattern
            $pattern = str_replace(':id','([0-9]+)', $pattern);
        }

        // Check if the requested url matches the pattern
        if (preg_match_all('~^' . $pattern . '+$~', $this->_url, $matches))
        {
            // If so, set the url_parts var
            $this->url_parts = explode('/', $route['target']);

            // Remove the first index of the matches array
            array_shift($matches);

            // Set the params var
            $this->_params = $matches;
        }
    }
}

处理路由的方法如下所示：

$router->addRoute('users/:id', 'users/view/');

public function addRoute($url, $target)
{
    $this->routes[] = ['url' => $url, 'target' => $target];
}

public function routes()
{
    foreach($this->routes as  $route) {

        $pattern = $route['url'];

        // Check if the route url contains :id
        if (strpos($route['url'], ':id'))
        {
            // Build the pattern
            $pattern = str_replace(':id','(\d+)', $pattern);
        }

        echo $pattern . '<br />' . $this->_url;

        if (preg_match_all('~' . $pattern . '~u', $this->_url, $matches))
        {
            $this->url_parts = explode('/', $route['target']);
            $this->_params = $matches;
        }
    }
}

private function routes()
{
    // Loop through the routes
    foreach($this->routes as  $route) 
    {
        // Set the pattern to the matching url
        $pattern = $route['url'];

        // Check if the pattern contains :id
        if (strpos($route['url'], ':id'))
        {
            // Build the pattern
            $pattern = str_replace(':id','([0-9]+)', $pattern);
        }

        // Check if the requested url matches the pattern
        if (preg_match_all('~^' . $pattern . '+$~', $this->_url, $matches))
        {
            // If so, set the url_parts var
            $this->url_parts = explode('/', $route['target']);

            // Remove the first index of the matches array
            array_shift($matches);

            // Set the params var
            $this->_params = $matches;
        }
    }
}

公共功能路由（）
{
foreach（$this->routes as$route）{
$pattern=$route['url']；
//检查路由url是否包含：id
if（strpos（$route['url']，':id'））
{
//构建模式
$pattern=str_replace（':id'，'（\d+），$pattern）；
}
回显$pattern.“
”。$this->\u url；
if（preg_match_all（“~.”.$pattern.'~u'，$this->\u url，$matches））
{
$this->url_parts=explode（'/'，$route['target']）；
$this->_params=$matches；
}
}
}

当前，脚本将遍历路由并检查url是否包含

：id

。如果是这样，它将替换为

（\d+）

然后脚本检查请求的url是否与模式匹配，并设置一些变量

到目前为止，一切正常，但经过一些测试后，在匹配url时出现了一些问题

我希望脚本只允许采用

/users/：id

格式的url，但当我调用以下url时，它将传递给

/users/1/test

如何防止脚本允许此URL，并且只允许它与定义的格式匹配？

请尝试以下操作：

$router->addRoute('users/(\d+)$', 'users/view/');

---

我自己解决了这个问题。 我必须在表达式前加一个^，在表达式后加一个+$。 因此函数如下所示：

$router->addRoute('users/:id', 'users/view/');

public function addRoute($url, $target)
{
    $this->routes[] = ['url' => $url, 'target' => $target];
}

public function routes()
{
    foreach($this->routes as  $route) {

        $pattern = $route['url'];

        // Check if the route url contains :id
        if (strpos($route['url'], ':id'))
        {
            // Build the pattern
            $pattern = str_replace(':id','(\d+)', $pattern);
        }

        echo $pattern . '<br />' . $this->_url;

        if (preg_match_all('~' . $pattern . '~u', $this->_url, $matches))
        {
            $this->url_parts = explode('/', $route['target']);
            $this->_params = $matches;
        }
    }
}

private function routes()
{
    // Loop through the routes
    foreach($this->routes as  $route) 
    {
        // Set the pattern to the matching url
        $pattern = $route['url'];

        // Check if the pattern contains :id
        if (strpos($route['url'], ':id'))
        {
            // Build the pattern
            $pattern = str_replace(':id','([0-9]+)', $pattern);
        }

        // Check if the requested url matches the pattern
        if (preg_match_all('~^' . $pattern . '+$~', $this->_url, $matches))
        {
            // If so, set the url_parts var
            $this->url_parts = explode('/', $route['target']);

            // Remove the first index of the matches array
            array_shift($matches);

            // Set the params var
            $this->_params = $matches;
        }
    }
}