php request uri,PHP 扩展 - 获取正确的 URI
最近在写的 Azalea MVC 框架中，类似 Zend Framework 根据 url 来获取 Controller Action 等参数。在开发环境中，我使用是 Mac 下自带的 Apache + php_mod 方式，该方式直接获取 $_SERVER['PATH_INFO'] 即可得到请求的 URI，代码如下
zval *server, *uri = NULL;
server = &PG(http_globals)[TRACK_VARS_SERVER];
if ((field = zend_hash_str_find(Z_ARRVAL_P(server), ZEND_STRL("PATH_INFO"))) && Z_TYPE_P(field) == IS_STRING) {
uri = zend_string_copy(Z_STR_P(field));
}
然而在测试环境中，使用的是 Nginx + php_fpm 方式，不知为何 PATH_INFO 属性并不存在，参考鸟哥的 yaf，得到以下代码解决
#include "ext/standard/url.h" // for php_url_*
zval *server, *field, *uri = NULL;
server = &PG(http_globals)[TRACK_VARS_SERVER];
do {
// 还是先找 PHP_INFO
if ((field = zend_hash_str_find(Z_ARRVAL_P(server), ZEND_STRL("PATH_INFO"))) && Z_TYPE_P(field) == IS_STRING) {
uri = zend_string_copy(Z_STR_P(field));
break;
}
// 接着找 REQUEST_URI
if ((field = zend_hash_str_find(Z_ARRVAL_P(server), ZEND_STRL("REQUEST_URI"))) && Z_TYPE_P(field) == IS_STRING) {
if (strncasecmp(Z_STRVAL_P(field), ZEND_STRL("http://")) &&
strncasecmp(Z_STRVAL_P(field), ZEND_STRL("https://"))) {
// not http url
char *pos = strstr(Z_STRVAL_P(field), "?");
if (pos) {
// found query
uri = zend_string_init(Z_STRVAL_P(field), pos - Z_STRVAL_P(field), 0);
} else {
uri = zend_string_copy(Z_STR_P(field));
}
} else {
php_url *urlInfo = php_url_parse(Z_STRVAL_P(field));
if (urlInfo && urlInfo->path) {
uri = zend_string_init(urlInfo->path, strlen(urlInfo->path), 0);
}
php_url_free(urlInfo);
}
break;
}
// 最后找 ORIG_PATH_INFO
if ((field = zend_hash_str_find(Z_ARRVAL_P(server), ZEND_STRL("ORIG_PATH_INFO"))) &&
Z_TYPE_P(field) == IS_STRING) {
uri = zend_string_copy(Z_STR_P(field));
break;
}
} while (0);
最后附上 Apache 和 Nginx 下的 rewrite 规则 :)
; APACHE
Options -Indexes +FollowSymLinks +ExecCGI
DirectoryIndex index.php
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule .* index.php/$0 [L]
; NGINX
location / {
if (!-e $request_filename) {
rewrite . /index.php last;
}
}