note 55519 added to function.fpassthru

While trying to "passthru" a file to the browser via PHP, but using the FEOF loop, the script tried to buffer the entire file before passing it to the browser. This is my original script. When calling it with a 15M PHP memory limit and a 16M file, apache killed the script. <?php $name = $tempDir . $_GET["file"]; $fd = fopen($name, 'rb'); if($fd == false) die("<font color=red>ERROR: File not found.</font>"); // send the right headers header("Cache-Control: ");// leave blank to avoid IE errors header("Pragma: ");// leave blank to avoid IE errors header("Content-type: application/octet-stream"); header("Content-Disposition: attachment; filename=\"" . $_GET["file"] . "\""); header("Content-length:".(string)(filesize($name))); sleep(1); session_write_close(); ob_flush(); flush(); while(!feof($fd)) { $buffer = fread($fd, 2048); print $buffer; } fclose ($fd); exit; ?> Apache error log read: Allowed memory size of 15728640 bytes exhausted (tried to allocate 10240 bytes) I tried everything, including a flush() inside the loop. But the solution was forcing the flush other way: <?php $buffer = fread($fd, 32 * 1024); ?> voila... works just fine for me. ---- Manual Page -- http://www.php.net/manual/en/function.fpassthru.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+55519 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+55519&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+55519&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+55519&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+55519&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+55519&report=yes&reason=non-english Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+55519&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+55519&report=yes Search -- http://master.php.net/manage/user-notes.php