Php simple method of getting file extension

This article mainly introduces php's simple method of getting the file extension. The example analyzes the php's technique of getting the file extension, which has some reference value, for more information about how to obtain the file extension in php, see the following example. Share it with you for your reference. The specific implementation method is as follows:

<? Php function get_file_extension ($ file_name) {/* may contain multiple dots */$ string_parts = explode ('. ', $ file_name); $ extension = $ string_parts [count ($ string_parts)-1]; $ extension = strtolower ($ extension); return $ extension ;} $ str = "img.jpg"; echo get_file_extension ($ str); // output: jpg?>

I hope this article will help you with php programming.