使用Javascript获取用户代理。然后根据用户代理做一个重定向。

类似这样：

var ua = navigator.userAgent; 

if (ua === \'whatever userAgent you are testing for\')
{
   window.location = \'https://newurl.com\'
}

你可以写得很简单。htaccess基于用户代理重定向，类似于这样。

RewriteEngine on

RewriteCond %{HTTP_USER_AGENT} Opera
RewriteRule ^abc.html$ opera.html [NC,L]

RewriteCond %{HTTP_USER_AGENT} MSIE
RewriteRule ^abc.html$ msie.html [NC,L]

RewriteCond %{HTTP_USER_AGENT} Chrome
RewriteRule ^abc.html$ chrome.html [NC,L]

RewriteCond %{HTTP_USER_AGENT} Safari
RewriteRule ^abc.html$ safari.html [NC,L]

RewriteCond %{HTTP_USER_AGENT} Firefox
RewriteRule ^abc.html$ firefox.html [NC,L]

RewriteRule ^abc.html$ default.html [L]

add_action( \'template_redirect\', \'device_redirect\' );

function device_redirect(){
  if ( is_front_page() && is_home() ) {
    if( stristr($_SERVER[\'HTTP_USER_AGENT\'],\'iphone\') || strstr($_SERVER[\'HTTP_USER_AGENT\'],\'iphone\') ) {
            wp_redirect( "http://www.example.com/iphone", 301 );
    } else if( stristr($_SERVER[\'HTTP_USER_AGENT\'],\'android\') ) {
           wp_redirect( "http://www.example.com/andriod", 301 );
    }
 }
}