109 lines
3.3 KiB
PHP
109 lines
3.3 KiB
PHP
<?php
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class Router
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{
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private $routes = array();
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private $namedRoutes = array();
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private $basePath = '';
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public function setBasePath($basePath) {
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$this->basePath = (string) $basePath;
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}
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public function map($routeUrl, $target = '', array $args = array()) {
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$route = new Route();
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$route->setUrl($this->basePath . $routeUrl);
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$route->setTarget($target);
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if(isset($args['methods'])) {
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$methods = explode(',', $args['methods']);
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$route->setMethods($methods);
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}
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if(isset($args['filters'])) {
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$route->setFilters($args['filters']);
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}
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if(isset($args['name'])) {
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$route->setName($args['name']);
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if (!isset($this->namedRoutes[$route->getName()])) {
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$this->namedRoutes[$route->getName()] = $route;
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}
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}
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$this->routes[] = $route;
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}
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public function matchCurrentRequest() {
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$requestMethod = (isset($_POST['_method']) && ($_method = strtoupper($_POST['_method'])) && in_array($_method,array('PUT','DELETE'))) ? $_method : $_SERVER['REQUEST_METHOD'];
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$requestUrl = $_SERVER['REQUEST_URI'];
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// strip GET variables from URL
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if(($pos = strpos($requestUrl, '?')) !== false) {
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$requestUrl = substr($requestUrl, 0, $pos);
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}
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return $this->match($requestUrl, $requestMethod);
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}
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public function match($requestUrl, $requestMethod = 'GET') {
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foreach($this->routes as $route) {
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// compare server request method with route's allowed http methods
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if(!in_array($requestMethod, $route->getMethods())) continue;
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// check if request url matches route regex. if not, return false.
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if (!preg_match("@^".$route->getRegex()."*$@i", $requestUrl, $matches)) continue;
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$params = array();
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if (preg_match_all("/:([\w-]+)/", $route->getUrl(), $argument_keys)) {
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// grab array with matches
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$argument_keys = $argument_keys[1];
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// loop trough parameter names, store matching value in $params array
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foreach ($argument_keys as $key => $name) {
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if (isset($matches[$key + 1]))
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$params[$name] = $matches[$key + 1];
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}
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}
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$route->setParameters($params);
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return $route;
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}
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return false;
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}
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public function generate($routeName, array $params = array()) {
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// Check if route exists
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if (!isset($this->namedRoutes[$routeName]))
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throw new Exception("No route with the name $routeName has been found.");
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$route = $this->namedRoutes[$routeName];
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$url = $route->getUrl();
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// replace route url with given parameters
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if ($params && preg_match_all("/:(\w+)/", $url, $param_keys)) {
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// grab array with matches
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$param_keys = $param_keys[1];
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// loop trough parameter names, store matching value in $params array
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foreach ($param_keys as $i => $key) {
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if (isset($params[$key]))
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$url = preg_replace("/:(\w+)/", $params[$key], $url, 1);
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}
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}
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return $url;
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}
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}
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