How to get the operating system type quickly by PHP

This article will explain in detail how PHP can quickly obtain operating system types. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article.

1. Using the PHP environment variable HTTP_USER_AGENT, the variable can be used to obtain user client information.

Including operating system and browser and so on.

2. Use the predefined constant PHP_OS.

Constants can get the current operating system name. Just output it directly.

3. Use php_uname to return information about the system.

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