PHP：如何使用通配符搜索文件

I need to read a file in PHP, but I only know the end of the filename, so I need to serch the file in a given directory using wildcards: *filename.wav and then return it to the browser. Is there a function to do that? or I need to get all the files in the directory and then search one by one?I need to read a file in PHP, but I only know t