Alternative to Stream_Copy_To_Stream() php

Question

I am working on a file sharing site right now and I\'ve run into a small problem. I am using the upload scrip uploadify which works perfectly but if the user wants i want the up

Answer 1

Do you have better results if you try reading the file in chunks like this?:

$my_file = fopen($temp_file, 'rb');

$encrypted_file_name = $target_file;
$encrypted_file = fopen($encrypted_file_name, 'wb');

stream_filter_append($encrypted_file, 'mcrypt.rijndael_128', STREAM_FILTER_WRITE, $opts);
//stream_copy_to_stream($my_file, $encrypted_file);

rewind($my_file);

while (!feof($my_file)) {
    fwrite($encrypted_file, fread($my_file, 4096));
}

You might also try calling stream_set_chunk_size prior to calling stream_copy_to_stream to set the size of the buffer it uses to read from the source stream when copying to the destination.

Hope that helps.

EDIT: I tested with this code and when uploading a 700MB movie file, the peak memory usage of PHP is 524,288 bytes. It looks like stream_copy_to_stream will try to read the entire source file into memory unless you read it in chunks passing the length and offset arguments.

$encrypted_file_name = $target_file;
$encrypted_file = fopen($encrypted_file_name, 'wb');

stream_filter_append($encrypted_file, 'mcrypt.rijndael_128', STREAM_FILTER_WRITE, $opts);

$size = 16777216;  // buffer size of copy
$pos  = 0;         // initial file position

fseek($my_file, 0, SEEK_END);
$length = ftell($my_file);    // get file size

while ($pos < $length) {
    $writ = stream_copy_to_stream($my_file, $encrypted_file, $size, $pos);
    $pos += $writ;
}

fclose($encrypted_file);
fclose($my_file);
unlink($temp_file);