让Codeigniter控制器支持多级目录
最近做一个移动端的项目，也包括PC端。为了保证用户能记住一域名，改了一下路由，基于 [核心代码 Core] 让Codeigniter控制器支持多级目录【支持2.1.2】而改。或许有人会说移动端的时候访问域名和PC端的区别开来就OK，但是不。互联网域名数不清的数，谁没事记那么多，
<?php
if (!defined('BASEPATH')) {
exit ('No direct script access allowed');
}
class MY_Router extends CI_Router {
public function __construct() {
parent :: __construct();
$this->agent=load_class('user_agent');
//$this->directory='mobile/';
if ($this->agent->is_mobile()) {
$this->directory='mobile/';
}
}
function set_directory($dir) {
$this->directory =$this->directory.$dir . '/';
}
function _validate_request($segments) {
if (count($segments) == 0) {
return $segments;
}
if (file_exists(APPPATH . 'controllers/'.$this->fetch_directory() . $segments . '.php')) {
return $segments;
}
if (is_dir(APPPATH . 'controllers/' .$this->fetch_directory(). $segments)) {
$temp = array (
'dir' => '',
'number' => 0,
'path' => ''
);
$temp['number'] = count($segments) - 1;
for ($i = 0; $i <= $temp['number']; $i++) {
$temp['path'] .= $segments[$i] . '/';
if (is_dir(APPPATH . 'controllers/' . $temp['path'])) {
$temp['dir'][] = str_replace(array (
'/',
'.'
), '', $segments[$i]);
}
}
$this->set_directory(implode('/', $temp['dir']));
$segments = array_diff($segments, $temp['dir']);
$segments = array_values($segments);
unset ($temp);
if (count($segments) > 0) {
if (!file_exists(APPPATH . 'controllers/' . $this->fetch_directory() . $segments . '.php')) {
if (!empty ($this->routes['404_override'])) {
$x = explode('/', $this->routes['404_override']);
$this->set_directory('');
$this->set_class($x);
$this->set_method(isset ($x) ? $x : 'index');
return $x;
} else {
show_404($this->fetch_directory() . $segments);
}
}
} else {
if (strpos($this->default_controller, '/') !== FALSE) {
$x = explode('/', $this->default_controller);
$this->set_class($x);
$this->set_method($x);
} else {
$this->set_class($this->default_controller);
$this->set_method('index');
}
if (!file_exists(APPPATH . 'controllers/' . $this->fetch_directory() . $this->default_controller . '.php')) {
$this->directory = '';
return array ();
}
}
return $segments;
}
if (!empty ($this->routes['404_override'])) {
$x = explode('/', $this->routes['404_override']);
$this->set_class($x);
$this->set_method(isset ($x) ? $x : 'index');
return $x;
}
show_404($segments);
}
}
或许你喜欢用域名来区分移动端和PC端,而且你只想共用一个空间、一份CI代码，那么这正合适你
if ( ! function_exists('is_mobile'))
{
function is_mobile()
{
$user_agent = $_SERVER['HTTP_USER_AGENT'];
$mobile_agents = Array("240x320","acer","acoon","acs-","abacho","ahong","airness","alcatel","amoi","android","anywhereyougo.com","applewebkit/525","applewebkit/532","asus","audio","au-mic","avantogo","becker","benq","bilbo","bird","blackberry","blazer","bleu","cdm-","compal","coolpad","danger","dbtel","dopod","elaine","eric","etouch","fly ","fly_","fly-","go.web","goodaccess","gradiente","grundig","haier","hedy","hitachi","htc","huawei","hutchison","inno","ipad","ipaq","ipod","jbrowser","kddi","kgt","kwc","lenovo","lg ","lg2","lg3","lg4","lg5","lg7","lg8","lg9","lg-","lge-","lge9","longcos","maemo","mercator","meridian","micromax","midp","mini","mitsu","mmm","mmp","mobi","mot-","moto","nec-","netfront","newgen","nexian","nf-browser","nintendo","nitro","nokia","nook","novarra","obigo","palm","panasonic","pantech","philips","phone","pg-","playstation","pocket","pt-","qc-","qtek","rover","sagem","sama","samu","sanyo","samsung","sch-","scooter","sec-","sendo","sgh-","sharp","siemens","sie-","softbank","sony","spice","sprint","spv","symbian","tablet","talkabout","tcl-","teleca","telit","tianyu","tim-","toshiba","tsm","up.browser","utec","utstar","verykool","virgin","vk-","voda","voxtel","vx","wap","wellco","wig browser","wii","windows ce","wireless","xda","xde","zte");
$is_mobile = false;
foreach ($mobile_agents as $device) {
if (stristr($user_agent, $device)) {
$is_mobile = true;
break;
}
}
return $is_mobile;
}
}
（上面代码为oschina）
判断下是不是移动端就行了，造个钩子 j接触drupal的看到这个 hook 有点咻~ 多谢了，正好最近用到这个。
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