Method to implement php301 redirection: 1. Get the domain name of the current page; 2. Determine the request part after the address; 3. Determine whether the current domain name contains www; 4. If it does not contain www, use header( ) function issues a 301 redirect jump header, and then jumps to the URL with www.
Friends who do SEO know that after the website is completed, in order to prevent search engines from giving wrong rankings (with www and without www), usually It is a good habit to 301 redirect the domain name without www to the one with www. However, many virtual hosts used by novice friends do not support 301. At this time, we can use code to do 301 redirection. Below we will analyze the 301 redirection jump code of PHP in detail. (//Followed by php comments)
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The above are php code-style 301 redirect jumps. You can put these codes at the head of the page, or you can make the code into a separate php file (such as 301 .php) then call it at the head of the page, the external calling code is:
<?phpinclude("301.php"); ?>。The above is the detailed content of How to do php301 redirect. For more information, please follow other related articles on the PHP Chinese website!