PHP识别手机访问_浮叶蓝空的博客

#### php实现通过手机浏览器的专属标识及http_user_agent识别是否是移动设备

### 创建一个监测方法
```php
/**
 * 判断是否为移动设备
 */
private function ismobile()
{
    // 特殊标识
    if (isset($_SERVER['HTTP_X_WAP_PROFILE']) || (isset ($_SERVER['HTTP_CLIENT']) && $_SERVER['HTTP_CLIENT'] == 'PhoneClient') || (isset ($_SERVER['HTTP_VIA']) && false !== strpos($_SERVER['HTTP_VIA'], 'wap'))) return true;
    // HTTP_USER_AGENT判断
    if (!empty($_SERVER['HTTP_USER_AGENT'])) {
        $agents = array(
            'nokia','sony','ericsson','mot','samsung','htc','sgh','lg','sharp','sie-','philips','panasonic','alcatel','lenovo','iphone','ipod','blackberry','meizu','android','netfront','symbian','ucweb','windowsce','palm','operamini','operamobi','openwave','nexusone','cldc','midp','wap','mobile','xiaomi/miuibrows'
        );
        if (preg_match("/(" . implode('|', $agents) . ")/i", strtolower($_SERVER['HTTP_USER_AGENT']))) {
            return true;
        }
    }
    //协议法，因为有可能不准确，放到最后判断
    if (isset ($_SERVER['HTTP_ACCEPT'])) {
        if ((strpos($_SERVER['HTTP_ACCEPT'], 'vnd.wap.wml') !== false) && (strpos($_SERVER['HTTP_ACCEPT'], 'text/html') === false || (strpos($_SERVER['HTTP_ACCEPT'], 'vnd.wap.wml') < strpos($_SERVER['HTTP_ACCEPT'], 'text/html')))) {
            return true;
        }
    }
    return false;
}
```

### 在基类构造函数中调用检查，并处理（可优化为调转到对应目录）
```php
if($this->ismobile()){
    // 路径不是mobile的路径则重定向到mobile站点上
    if (empty(explode('/', $this->request->url())[1]) || 'mobile' != explode('/', $this->request->url())[1]){
        $this->redirect('/mobile');
        exit;
    }
}
```

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