PHP : Function Reference : Filesystem Functions : filesize PHP Examples Tutorials References

this is "raw" version of remote_filesize() function. according to RFC, HTTP servers MUST implement at least GET, POST and HEAD requests, so the function just opens TCP socket connection, sends HEAD request and receives response, parsing length of the resource. [$ipAddress] is the ip address of remote server. [$url] is the name of file which size you want to determine. the code was tested under Apache 2.0.43 and IIS 6.0 and it works correctly in both cases. i wish the code can save someone's time :) example: $ipa = gethostbyname( "www.someserver.com" ); $url = "/docs/somedocument.pdf"; $fsize = remote_filesize2( $ipa, $url ); ========================== <?php function ReadHeader( $socket ) { $i=0; $header = ""; while( true && $i<20 ) { // counter [$i] is used here to avoid deadlock while reading header string // it's limited by [20] here cause i really haven't ever met headers with string counter greater than 20 // * $s = fgets( $socket, 4096 ); $header .= $s; if( strcmp( $s, "\r\n" ) == 0 || strcmp( $s, "\n" ) == 0 ) break; $i++; } if( $i >= 20 ) { // suspicious header strings count was read // * return false; } return $header; } function remote_filesize2( $ipAddress, $url ) { $socket = fsockopen( $ipAddress, 80 ); if( !$socket ) { // failed to open TCP socket connection // do something sensible here besides exit(); // ... exit(); } // just send HEAD request to server // * fwrite( $socket, "HEAD $url HTTP/1.0\r\nConnection: Close\r\n\r\n" ); // read the response header // * $header = ReadHeader( $socket ); if( !$header ) { Header( "HTTP/1.1 404 Not Found" ); exit(); } // try to acquire Content-Length within the response // * $regex = '/Content-Length:\s([0-9].+?)\s/'; $count = preg_match($regex, $header, $matches); // if there was a Content-Length field, its value // will now be in $matches[1] if( isset( $matches[1] ) ) { $size = $matches[1]; } else { $size = 0; } fclose( $socket ); return $size; } ?>

some notes and modifications to previous post. refering to RFC, when using HTTP/1.1 your request (either GET or POST or HEAD) must contain Host header string, opposite to HTTP/1.1 where Host ain't required. but there's no sure how your remote server would treat the request so you can add Host anyway (it won't be an error for HTTP/1.0). host value _must_ be a host name (not CNAME and not IP address). this function catches response, containing Location header and recursively sends HEAD request to host where we are moved until final response is met. (you can experience such redirections often when downloading something from php scripts or some hash links that use apache mod_rewrite. most all of dowloading masters handle 302 redirects correctly, so this code does it too (running recursively thru 302 redirections).) [$counter302] specify how much times your allow this function to jump if redirections are met. If initial limit (5 is default) expired -- it returns 0 (should be modified for your purposes whatever).0 ReadHeader() function is listed in previous post (param description is placed there too). <?php function remote_filesize_thru( $ipAddress, $url, $counter302 = 5 ) { $socket = fsockopen( "10.233.225.2", 8080 ); if( !$socket ) { // failed to open TCP socket connection // do something sensible here besides exit(); echo " failed to open socket for [$ipAddress]"; exit(); } // just send HEAD request to server $head = "HEAD $url HTTP/1.0\r\nConnection: Close\r\n\r\n"; // you may use HTTP/1.1 instead, then your request head string _must_ contain "Host: " header fwrite( $socket, $head ); // read the response header $header = ReadHeader( $socket ); if( !$header ) { // handle empty response here the way you need... Header( "HTTP/1.1 404 Not Found" ); exit(); } fclose( $socket ); // check for "Location" header $locationMarker = "Location: "; $pos = strpos( $header, $locationMarker ); if( $pos > 0 ) { $counter302--; if( $counter302 < 0 ) { // redirect limit (5 by default) expired -- return some warning or do something sensible here echo "warning: too long redirection sequence"; return 0; } // Location is present -- we should determine target host and move there, like any downloading masters do... // no need to use regex here $end = strpos( $header, "\n", $pos ); $location = trim( substr( $header, $pos + strlen( $locationMarker ), $end - $pos - strlen( $locationMarker ) ), "\\r\\n" ); // extract pure host (without "http://") $host = explode( "/", $location ); $ipa = gethostbyname( $host[2] ); // move to Location return remote_filesize_thru( $ipa, $location, $counter302 ); } // try to acquire Content-Length within the response $regex = '/Content-Length:\s([0-9].+?)\s/'; $count = preg_match($regex, $header, $matches); // if there was a Content-Length field, its value // will now be in $matches[1] if( isset( $matches[1] ) ) $size = $matches[1]; else $size = 0; return $size; }

josh finlay

I know there has been alot of remote filesize snippets posted, but I'll post mine also. It supports HTTP/HTTPS/FTP/FTPS and detects which type it should use. It needs --enable-ftp for the FTP/FTPS functions. I hope this works for someone. <?php function remotefsize($url) { $sch = parse_url($url, PHP_URL_SCHEME); if (($sch != "http") && ($sch != "https") && ($sch != "ftp") && ($sch != "ftps")) { return false; } if (($sch == "http") || ($sch == "https")) { $headers = get_headers($url, 1); if ((!array_key_exists("Content-Length", $headers))) { return false; } return $headers["Content-Length"]; } if (($sch == "ftp") || ($sch == "ftps")) { $server = parse_url($url, PHP_URL_HOST); $port = parse_url($url, PHP_URL_PORT); $path = parse_url($url, PHP_URL_PATH); $user = parse_url($url, PHP_URL_USER); $pass = parse_url($url, PHP_URL_PASS); if ((!$server) || (!$path)) { return false; } if (!$port) { $port = 21; } if (!$user) { $user = "anonymous"; } if (!$pass) { $pass = "phpos@"; } switch ($sch) { case "ftp": $ftpid = ftp_connect($server, $port); break; case "ftps": $ftpid = ftp_ssl_connect($server, $port); break; } if (!$ftpid) { return false; } $login = ftp_login($ftpid, $user, $pass); if (!$login) { return false; } $ftpsize = ftp_size($ftpid, $path); ftp_close($ftpid); if ($ftpsize == -1) { return false; } return $ftpsize; } } ?>

michael mh

I just noticed, that filesize(), filemtime() etc. only work correctly on Mac OS X if the file's directory is executable for the PHP process. Otherwise it will report "stat failed for <filepathandname>".

medhefgo

I created another dirsize() function which doesn't use recursion. I gained a ~2-3% performance boost while it uses ~50% lesser memory! <?php function dirsize($dirname) { if (!is_dir($dirname) || !is_readable($dirname)) { return false; } $dirname_stack[] = $dirname; $size = 0; do { $dirname = array_shift($dirname_stack); $handle = opendir($dirname); while (false !== ($file = readdir($handle))) { if ($file != '.' && $file != '..' && is_readable($dirname . DIRECTORY_SEPARATOR . $file)) { if (is_dir($dirname . DIRECTORY_SEPARATOR . $file)) { $dirname_stack[] = $dirname . DIRECTORY_SEPARATOR . $file; } $size += filesize($dirname . DIRECTORY_SEPARATOR . $file); } } closedir($handle); } while (count($dirname_stack) > 0); return $size; } ?>

hkpark99

How to get folder size? Here is an answer. =========================================== function foldersize($path) { $total_size = 0; $files = scandir($path); foreach($files as $t) { if (is_dir($t)) { // In case of folder if ($t<>"." && $t<>"..") { // Exclude self and parent folder $size = foldersize($path . "/" . $t); // print("Dir - $path/$t = $size \n"); $total_size += $size; } } else { // In case of file $size = filesize($path . "/" . $t); // print("File - $path/$t = $size \n"); $total_size += $size; } } return $total_size; }

robin leffmann

Here's a dodgy little snippet I made to find out how much disk space (in 1K-blocks) any chosen node - file or directory - occupies in the file system.. function nodesize( $node ) { if( !is_readable($node) ) return false; $blah = exec( "/usr/bin/du -sk $node" ); return substr( $blah, 0, strpos($blah, 9) ); } The character I search for with strpos() is a tab, as this is what 'du' on OpenBSD uses to separate size and node in the output - this might be whitespaces in other *nixes/distributions.

bizarredotbg

Here is a simple addition to the original example that i have made. First of all i must mention that i need to list all files in a dir and i do know all files names. Because the filenames contains an INT at the same place in every file's name i use $n++ to generate the file names. The code: <?php // outputs e.g. bits_01.jpg: 0.05 kb //lets asign a value of 1 so we can start with file bits_01.jpg $n = 1; //the last file is bits_09.jpg so i call the WHILE until $n gets a value of 9 while ($n < 10) { //using $n in each file's name $filename = 'bits_0'.$n.'.jpg'; //getting the file size - from original example $size = filesize($filename); //while i don't wan't the result in bytes instead i divide by 1024 to print it out in kilo bytes (if you need it in MB then divide it by 1048576 //at the same line we round the result to the fourth sign after the comma $sizemb = round(($size/1024),4); //printing the result //filename : size MB and brake to print next on the next line echo $filename . ': ' . $sizemb . ' kb<br />'; //now after i've printed the first file and it's size, we proceed to the next one $n++; } ?> Hope it is useful to someone. P.S Please excuse my bad English :-)

jiquera

here a piece of code to format a filesize: <?php function formatbytes($val, $digits = 3, $mode = "SI", $bB = "B"){ //$mode == "SI"|"IEC", $bB == "b"|"B" $si = array("", "k", "M", "G", "T", "P", "E", "Z", "Y"); $iec = array("", "Ki", "Mi", "Gi", "Ti", "Pi", "Ei", "Zi", "Yi"); switch(strtoupper($mode)) { case "SI" : $factor = 1000; $symbols = $si; break; case "IEC" : $factor = 1024; $symbols = $iec; break; default : $factor = 1000; $symbols = $si; break; } switch($bB) { case "b" : $val *= 8; break; default : $bB = "B"; break; } for($i=0;$i<count($symbols)-1 && $val>=$factor;$i++) $val /= $factor; $p = strpos($val, "."); if($p !== false && $p > $digits) $val = round($val); elseif($p !== false) $val = round($val, $digits-$p); return round($val, $digits) . " " . $symbols[$i] . $bB; } //some test cases: function test($i, $digits = 3, $mode = "SI", $bB = "B"){ echo $i . " = " . formatbytes($i, $digits, $mode, $bB) . " \n"; } test(1024); test(1024*1024); test(1024*1024, 4); test(1024*1024, 3, "IEC"); test(1024, 3, "SI", "b"); test(32423); test(323); test(128, "3", "IEC", "b"); test(324235236362453); test(32423535424236324362453, 3, "IEC"); //actual use: echo formatbytes(file_size("myfile.php")); ?> it formats to bit or bytes according to SI or IEC and rounded to a given number of digits.

magicaltux

filesize() acts differently between platforms and distributions. I tried manually compiling PHP on a 32bit platform. Filesize() would fail on files >2G. Then I compiled again, adding CFLAGS=`getconf LFS_CFLAGS` in front of configure. Then filesize() would success, but the result would be converted to a 32bit signed integer... However on 64bit systems, PHP's integers are 64bit signed, and this would work just well... So now the question is : should linux distributions (Debian, etc) define LFS_CFLAGS or not ? Doing so makes PHP be able to open/seek such files, but makes its behaviour buggy (stat() is supposed to fail if file size is >32bit and appl does not support such integers)...

fabio

core58 at mail dot ru, it did save me time! One note though. I had to add the Host: header in order to get it working. The value should be the host name (DNS, not IP).

md2perpe

Another way to get a filesize > 2GB on Linux: <?php $size = trim(`stat -c%s $file_path`); ?>

raphael kirchner

Addition to my earlier post: I searched around and found the background in the notes for disk_total_space(): http://www.php.net/manual/en/function.disk-total-space.php To give a short summary here - andudi pointed out that a) the SIZE of a file and b) the SPACE on disk it uses aren't equal and shalless provided a function dskspace() which returns exactly (tested!) what "du" would.

coolmax1

@l0co at wp dot pl: fopen with w+: Open for reading and writing; place the file pointer at the beginning of the file and truncate the file to zero length. If the file does not exist, attempt to create it. in the second case, it will be: <?php $f = fopen($filename, 'w+'); // Now file specified in the $filename will be zero byte length echo filesize($filename); //now filesize return zero fclose($f); ?> Did you mean that or something other?

randy tayler

9U's snippet actually returns an array for Content-Length. To get the filesize in bytes you'd want to say $filesize = $ary_header['Content-Length'][1];

jonas sweden

<?php /* Recursive filesize, nothing new but a small one. The $self var as a convenience if i want to change functionname */ function filesize_r($path){ if(!file_exists($path)) return 0; if(is_file($path)) return filesize($path); $self = __FUNCTION__; $ret = 0; foreach(glob($path."/*") as $fn) $ret += $self($fn); return $ret; } ?>

################################################ # Remote file size $filename = 'http://www.url.com/image.jpg'; $ary_header = get_headers($filename, 1); $filesize = $ary_header['Content-Length']; $type = $ary_header['Content-Type'];

filesize

Gets file size (PHP 4, PHP 5)
int filesize ( string filename )

Example 636. filesize() example

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