<?php// Open our file we are going to blank.$fp=fopen('FILENAME.txt', 'wb');// Let's ge tthe filesize of the file we are going to blank.$fs=filesize('FILENAME.txt');$dataWritten=0;// Loop through writing to the file in chunks of 1024 bytees.while ($i<=$fs){ // Write 1024 bytes to the file. if (fwrite($fp, str_repeat(0, 1024)) === FALSE) { // FOllowing is completely unnesscary. if (rand(0,1) == 0) { echo '-'; } else { echo '+'; } } else { // We are done writing. echo ' Done'; } // Keep count of how much data we have written. $i=$i+1024;}fclose($fp);?>