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I am working with large files in PHP, and need a RELIABLE way to get the file size of larger files over 4 GB, but PHP runs into problems with files over 2 GB... so far I have only seen solutions involving command line exec features, but the script will be used as a standalone console application, therefore, I am a bit hesitant to using exec as it might react differently on different platforms. The only way left as I see it is reading all the data and count the bytes, but this would be VERY slow... I need a fast and reliable way that will react equally on many different computers (Linux, Windows, Mac).

David Ferenczy Rogožan
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Daniel
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    32-bit PHP has problems with files >2GB, 64-bit PHP can handle a lot larger files – Mark Baker May 31 '13 at 22:01
  • I don't know any solution other than exec'ing a ls command for example. PHP's integer is signed, so you won't be able to do it with PHP's internal functions (on 32 bit systems) – bwoebi May 31 '13 at 22:01
  • Similar question? http://stackoverflow.com/questions/5501451/php-x86-how-to-get-filesize-of-2gb-file-without-external-program?rq=1 – wazy May 31 '13 at 22:04
  • can php x64 run on x32 systems? and where can i get it? :) – Daniel May 31 '13 at 22:04
  • If you're running on a 32-bit system, then I wouldn't expect files that can exceed the 2GB OS limitation – Mark Baker May 31 '13 at 22:05
  • No i am not, but as i mentioned the script will function as a command line app, and some people that will run it might do so on a 32bit system... – Daniel May 31 '13 at 22:06
  • 64-bit PHP 5.5 for Windows binaries available here: http://windows.php.net/qa/ – Mark Baker May 31 '13 at 22:06
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    https://github.com/jkuchar/BigFileTools from http://stackoverflow.com/questions/5501451/php-x86-how-to-get-filesize-of-2gb-file-without-external-program?rq=1 – wazy May 31 '13 at 22:07
  • If they're running it locally, they'll be working with the version of PHP that they have installed already, surely - or are you providing PHP as well as the script? – Mark Baker May 31 '13 at 22:12
  • If you check [this file](https://github.com/jkuchar/BigFileTools/blob/master/class/BigFileTools.php) from @wazy's link you will see several options for getting the size of a file larger than 2GB. Or you can just use that script. And no, 64-bit anything will never work on a 32-bit system. – Sammitch May 31 '13 at 22:17

2 Answers2

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This previously asked question seems very similar and has some ideas in it that you could explore: PHP x86 How to get filesize of > 2 GB file without external program?

In it the author comes up with a solution that he hosts on GitHub, the link is located here: https://github.com/jkuchar/BigFileTools/blob/master/src/BigFileTools.php

Beyond that you are running a 32 bit system and thus files over 2 GB will be troublesome in PHP from http://php.net/manual/en/function.filesize.php:

Note: Because PHP's integer type is signed and many platforms use 32bit integers, some filesystem functions may return unexpected results for files which are larger than 2GB.

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wazy
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  • This does not provide an answer to the question. To critique or request clarification from an author, leave a comment below their post. - [From Review](/review/low-quality-posts/11165337) – Jeff Feb 06 '16 at 13:13
  • @Jeff I don't see how this doesn't answer the question? BigFileTools states on the GitHub page: "This project is collection of hacks that are needed to manipulate files over 2GB in PHP (even on 32-bit systems)." – wazy Feb 09 '16 at 00:56
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Below code works OK for any filesize on any version of PHP / OS / Webserver / Platform.

// http head request to local file to get file size
$opts = array('http'=>array('method'=>'HEAD'));
$context = stream_context_create($opts);

// change the URL below to the URL of your file. DO NOT change it to a file path.
// you MUST use a http:// URL for your file for a http request to work
// SECURITY - you must add a .htaccess rule which denies all requests for this database file except those coming from local ip 127.0.0.1.
// $tmp will contain 0 bytes, since its a HEAD request only, so no data actually downloaded, we only want file size
$tmp= file_get_contents('http://127.0.0.1/pages-articles.xml.bz2', false, $context);

$tmp=$http_response_header;
foreach($tmp as $rcd) if( stripos(trim($rcd),"Content-Length:")===0 )  $size= floatval(trim(str_ireplace("Content-Length:","",$rcd)));
echo "File size = $size bytes";

// example output .... 9 GB local file
File size = 10082006833 bytes
PeeHaa
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Tech Consultant
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