Two methods for php to obtain the file extension

Two methods for php to obtain the file extension

This article describes a piece of php code used to obtain the file extension. it is convenient to use pathinfo () to obtain the extension in php. For more information, see. In php, you can easily obtain the file extension from the end of the file. You can use the php function pathinfo to do this. pay attention to the dot before the file extension. The extension obtained using pathinfo () does not include the vertex number. The following describes two methods to obtain the file extension. Method 1, Method 2 is basically the same as method 1, but it uses string operations to get the extension and uses a. number as the separator. Code: