解决CI框架的DisallowedKeyCharacters错误提示_PHP教程

用CI框架时，有时候会遇到这么一个问题，打开网页，只显示 Disallowed Key Characters 错误提示。有人说 url 里有非法字符。但是确定 url 是纯英文的，问题还是出来了。但清空浏览器历史记录和cookies后。 刷新就没问题了。有时候。打开不同的浏览器。有的浏览器会有问题。有的就不会。

解决 CodeIgniter 框架应用中，出现Disallowed Key Characters错误提示的方法。找到/system/core文件夹下的Input文件，将下面的代码：

<span function<="" span=""> _clean_input_keys(<span $str<="" span=""><span )="" {="" <="" span=""><span if<="" span=""> ( ! <span preg_match<="" span="">("/^[a-z0-9:_\/-]+$/i", <span $str<="" span=""><span ))="" {="" <="" span=""><span exit<="" span="">('Disallowed Key Characters.'<span );="" }="" <="" span=""><span <="" span=""><span clean="" utf-8="" if="" supported<="" span="">
    <span if<="" span=""> (UTF8_ENABLED === <span true<="" span=""><span )="" {="" <="" span=""><span $str<="" span=""> = <span $this<="" span="">->uni->clean_string(<span $str<="" span=""><span );="" }="" <="" span=""><span return<="" span=""> <span $str<="" span=""><span ;="" }<="" span=""></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>

改为：

<span function<="" span=""> _clean_input_keys(<span $str<="" span=""><span )="" {="" <="" span=""><span $config<="" span=""> = &get_config('config'<span );="" <="" span=""><span if<="" span=""> ( ! <span preg_match<="" span="">("/^[".<span $config<="" span="">['permitted_uri_chars']."]+$/i", <span rawurlencode<="" span="">(<span $str<="" span=""><span )))="" {="" <="" span=""><span exit<="" span="">('Disallowed Key Characters.'<span );="" }="" <="" span=""><span <="" span=""><span clean="" utf-8="" if="" supported<="" span="">
    <span if<="" span=""> (UTF8_ENABLED === <span true<="" span=""><span )="" {="" <="" span=""><span $str<="" span=""> = <span $this<="" span="">->uni->clean_string(<span $str<="" span=""><span );="" }="" <="" span=""><span return<="" span=""> <span $str<="" span=""><span ;="" }="" <="" span=""></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>

参考：http://www.nowamagic.net/librarys/veda/detail/1699

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