php如何修改文件后缀名

changeTypeName("E:/bak/video/code/views", "html", "phtml");
 
//改变文件目录下文件的后缀名
function changeTypeName($path, $oldTypaName, $newTypeName)
{
 $path = "glob://$path/*";
 $files = new DirectoryIterator($path);
 foreach ($files as $file) {
 $fileRealPath = $file->getRealPath(); //文件绝对路径
 $compressCssFileRealPath = str_replace(".$oldTypaName", ".$newTypeName", $fileRealPath);
 rename($fileRealPath, $compressCssFileRealPath);
 }
}