file_exists Checks whether a file exists boolfile_exists stringfilename Returns &true; if the file specified by filename exists; &false; otherwise. This function will not work on remote files; the file to be examined must be accessible via the server's filesystem. The results of this function are cached. See clearstatcache for more details. On windows use "//computername/share/filename" or "\\\\computername\share\filename" to check files on network shares.