How to modify domain name in php local

In the process of using PHP for development, we often encounter situations where the domain name needs to be modified. For example, we have developed a website, but for some reasons, the original domain name needs to be modified. Next, this article will briefly introduce how to modify the domain name locally.

1. Modify the local hosts file

In the process of modifying the domain name, you first need to modify the local hosts file. The hosts file is used to map a domain name to the corresponding IP address, so that the computer can correctly access the corresponding website when accessing the specified domain name. We can modify the domain name by modifying the hosts file and mapping the original domain name to the new IP address.

The following are the locations of hosts files under some common operating systems:

Windows10/8/7/Vista/XP: C:\Windows\System32\drivers\etc\hosts

Mac OS Domain name

For example, if we want to map the domain name www.old.com to the new IP address 127.0.0.1, then we can add the following content to the hosts file:

127.0. 0.1 www.old.com

After saving the hosts file, we successfully mapped the original domain name to the new IP address.

2. Modify the local Apache configuration file

In addition to modifying the hosts file, we also need to modify the local Apache configuration file. When using localhost or 127.0.0.1 to access the website, you are actually accessing the local Apache service. Moreover, if we change the domain name without modifying the Apache configuration file, we still cannot access the new domain name. Therefore, it is also necessary to modify the Apache configuration file.

Under Windows, the Apache configuration file is httpd.conf, while under Linux or Mac OS X, you need to find it in /etc/httpd/conf/httpd.conf.

Find the ServerName directive in the configuration file and modify it to a new domain name, for example:

ServerName www.new.com

At the same time, you also need to modify some virtual The host's configuration file. In the Apache configuration file, each virtual host corresponds to a configuration file. For example, the local Apache virtual host configuration file is usually in the path /etc/apache2/sites-available.

Open the configuration file of a virtual host, find the ServerName and ServerAlias ​​directives in it, and modify them to the new domain name. For example:

ServerName www.new.com

ServerAlias ​​new.com

3. Modify the local cache

Finally, we need to clear the local DNS Cache for changes to take effect. The DNS cache is used to store the DNS information recently accessed by the computer. When accessing the same domain name, the corresponding IP address can be obtained directly from the cache, which improves access speed.

Under Windows, we can clear the DNS cache by entering the ipconfig /flushdns command on the command line.

Under Mac OS X and Linux, you need to enter the sudo systemctl restart dnsmasq command in the terminal to restart the dnsmasq service to clear the DNS cache.

At this point, we have successfully modified the domain name locally. Since each operating system and application is set up differently, the above steps are only for reference and the specific operations need to be modified for each application.

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