Recently, I need to build a network disk to store and publish files. After screening, I found nextcloud is not bad and easy to install. After installing PHP online and setting the user password and database connection, it is OK. The most important thing is that it supports WebDAV, which is a good thing. Nextcloud supports clients on mobile phones or computers, and both Android and Apple support it. You can also download other network disk file management tools. After the connection is successful, you can directly read and use files.