php how to do a 301 redirect how to do a 301 PERMANENT REDIRECT What are the benefits of a 301 perma

Of course, you can do it, if you don't want to do it, then you can use a domain name, for example, only use a domain name with www, users can only use your domain name www, which is actually not good, because each user's habits are different, some people are not used to entering with www, some people are used to entering with www, the benefits of redirecting not only make the weight not dispersed but also do a good job of user experience, go to see those big portals**They have done 301 redirects, please see, Alipay, Isn't their weight higher than yours, they are still doing domain 301 redirects, and the difference between what they do and what they don't do is that they don't meet the user experience and lose the weight of the competition. Profit is the exchange.

3.Improve search engine rankings: Redirect multiple similar URLs to one primary URL address with 301 redirects to avoid a drop in search engine rankings due to duplicate content, thereby improving your search engine rankings.

3.301 redirects with plugins: In CMS systems such as WordPress, 301 redirects can be done by installing 301 redirect plugins. To do this, add the URL address that needs to be redirected in the plugin settings.

4.Improve user experience: 301 redirects to redirect the wrong URL accessed by Eye Witness to the correct URL, which can avoid the bad experience caused by the user's access to the wrong URL, thereby improving the user experience. Answer.

4.Improve user experience early ignition: 301 redirects redirect the wrong URL address to the correct URL address, which can avoid the bad experience caused by the user accessing the wrong URL address, thereby improving the user experience.

In short, 301 redirects are a very important optimization technology, which can help improve search engine rankings and improve user experience. I hope this article can help you understand the role of 301 redirects and how to use them.

URLs can be set in DNS, and HTTP redirects can be set up in the server.

To do ** optimization, we basically know that URL standardization requires 301 redirects. To put it bluntly, redirects various network requests to other locations through a method, which is commonly referred to as a web page jump. So how do you set up and make a 301 redirect?

Here are a few of the more common scenarios:

Step Method.

the_host = $_server['http_host'];Get into the entered domain name [**: like.

the_url = isset($_server['request_uri']) server['request_uri'] :'';Determine the back part of the address.

the_url = strtolower($the_url);Convert English letters to lowercase.

if($the_url=="/"Determine if it's the homepage.

if($the_host !== ''If the domain name is not ** with www, then make the following 301 jump.

Note: **if($the host !== ''"!".

"It is not exactly the same meaning, you can also use "!".="Not equal,In this way,In addition to jumping to the ** with www,You can also jump to all the domain names bound to this space。

After the file is written, upload it to the root directory with ftp software, which is generally a web file. So how do you call it? It's actually quite simple.

Call in the page where you need to set up a 301 redirect, **: Redirect> put this at the top of all your pages and you're done. As shown below:

2 Second: Single page set 301 redirect method.

header("http/ 301 moved permanently");

As shown in the figure below: In fact, in most cases, we generally do not need to set up 301 redirects, and there are very few cases where we use them.

When you find that your talent can't support your ambition, please quiet down and study.

301 redirect, in simple terms, means that when a user makes an access request to a server, the server is permanently redirected to another address. It's a search engine-friendly SEO tool that is not difficult to implement. Let's start by introducing a few situations where it is necessary to use 301 redirects:

1. Change the domain name and redirect the old domain name to the new domain name;

2. There are multiple domain names, and users who visit these domains can be automatically redirected to the main site through redirects.

3. Redirect the domain name without www to the domain name with www, so that entering the domain name without www will automatically turn to the domain name with www;

5. Change the web page extension, such as due to the need of the application. php to. html or. shtml；

6. Convert the old, dynamic URL to the new static URL;

7. **Revision, the new version of the content and the old version of the content exist for a period of time at the same time, and the old version of the content can be pointed to the corresponding content of the new version;

If you have any of the above conditions, it is recommended that you do a 301 redirect. A 301 redirect can not only centralize the authority of the domain name (case ), but also enable the new domain name to inherit the authority of the old domain name (case 1). In addition, if you don't redirect in this case, the old address in the user's favorites or search engine database will only give the visiting customer a 404 page error message, and your ** will lose traffic in vain.

Therefore, doing a good job of 301 redirection can reduce the traffic loss caused by revision, domain name change, etc., improve the user experience, and at the same time facilitate optimization.

Windows Host IIS Server Implements 301 Redirect:

1. Open the Internet Information Service Manager, right-click on the webpage or directory you want to redirect, and select "Redirect to URL";

2. Enter the URL address of the destination web page you want to jump to in the "Redirect to" input box;

3. Check "Permanent Redirection of Resources";

4. Finally, click "Apply".

Windows hosts for example:

asp .301 redirect under net:

Now create a new homepage file in the root directory, paste the following, and replace the URL with your target ULR.

Enable the pseudo-static function.

Pseudo-static side to do redirects.