php file_get_contents(): content truncated from 2147483648 to 2147483647 bytes - php

Question

How can I find out the issue when I'm going to create zip file of 2GB file.
Error
file_get_contents(): content truncated from 2147483648 to 2147483647
bytes
Fatal error: Out of memory (allocated 2151677952) (tried to allocate
18446744071562067968 bytes) in
I am using dedicated server and already set memory_limit,max_execution_time,max_upload_filesize,max_post_size. But it is not working for me.Please check my code and let me know what i am doing wrong -
create new zip object
$zip = new ZipArchive();
# create a temp file & open it
$tmp_file = tempnam('.','');
$zip->open($tmp_file, ZipArchive::CREATE);
# loop through each file
foreach($files as $file){
# download file
$download_file = file_get_contents($file_path.'/'.$file);
#add it to the zip
$zip->addFromString(basename($file_path.'/'.$file),$download_file);
}
# close zip
$zip->close();
$zip_name = $last_seg.'.zip';
# send the file to the browser as a download
header("Content-disposition: attachment; filename=$zip_name");
header('Content-type: application/zip');
readfile($tmp_file);

Answer 1

I change $zip->addFromString() to $zip->addFile() because you don't need read the content file to add the file, I test your code with 3 films and don't works (I had the same error) but when I use $zip->addFile() all go ok and I could download the zip file with 3gb.
I need to use set_time_limit(0);
If you want test this code only change the values of:
$files //Array of files name
$file_path //Path where your files ($files) are placed
$last_seg //The name of your zip file
<?php
set_time_limit(0);
$files = array('Exodus.mp4', 'the-expert.webm', 'what-virgin-means.webm');
$file_path = 'zip';
$last_seg = 'test';
$zip = new ZipArchive();
# create a temp file & open it
$tmp_file = tempnam('.','');
$zip->open($tmp_file, ZipArchive::CREATE);
# loop through each file
foreach($files as $file){
$zip->addFile($file_path.'/'.$file, $file);
}
# close zip
$zip->close();
$zip_name = $last_seg.'.zip';
# send the file to the browser as a download
header("Content-disposition: attachment; filename=$zip_name");
header('Content-type: application/zip');
readfile($tmp_file);
?>
You can read more at:
http://php.net/manual/en/ziparchive.addfile.php

Answer 2

You'll never been able to allocate more memory than PHP_INT_MAX. So maybe the linux x64 versions of PHP can handle this if the file_gets_content isn't internally limited to a signed int 32bits, but on windows or on a 32bits system you have no chance to achieve this without streaming.
Something like this might work: (not tested yet)
$fr = fopen("http://...", "r");
$fw = fopen("zip://c:\\test.zip#test", "w");
while(false !== ($buffer = fread($fr, 8192)))
{
fwrite($fw, $buffer, strlen($buffer));
}
fclose($fr);
fclose($fw);
Ok my bad apparently PHP do not provide the mode "+w" for a zip stream... Your last options will be then, writing the whole file in a temp file (by streaming it like i did, no file_get_contents) before giving it to an external program (with a system() or popen call...) or using another compression format (apparently php support write stream operation for zlib ant bzip2) or use an external library for php.

Answer 3

try to put this line in the beginning of your code:
ini_set("memory_limit", -1);
Refer to this question
Fatal error: Out of memory (allocated 1134559232) (tried to allocate 32768 bytes) in X:\wamp\www\xxx