Title: Determining file size in FTP Marked Cool (Review this resource)
Author: davidlo
Posted On: 2004-12-20
Category: Home > PHP Functions
Popularity: 
Description: Returns size of specified file in FTP
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FTP File Size
Introduction:
ftp_filesize() works via two ways-the ftp_raw() function found in PHP 5 or by retrieving a list of files from the directory determined by the $path parameter. The PHP 5 method is very simple, consisting of a SIZE command sent to the FTP server. The less elegant method retrieves the entire raw listing of the directory, parses through it using the ftpProcessEntry function until the specified filename is found, and returns the size attribute from there.
Source Code:
<?php
function stripspaces($str)
{
while(substr($str, 0, 1)==" ")
$str=substr($str, 1);
return $str;
}
function ftpProcessEntry($line)
{
list($prop['perm'],$next)=split(" ",$line,2);
list($prop['num'],$next)=split(" ",stripspaces($next),2);
list($prop['owner'],$next)=split(" ",stripspaces($next),2);
list($prop['group'],$next)=split(" ",stripspaces($next),2);
list($prop['size'],$next)=split(" ",stripspaces($next),2);
list($prop['month'],$next)=split(" ",stripspaces($next),2);
list($prop['day'],$next)=split(" ",stripspaces($next),2);
list($prop['time'],$prop['filename'])=split(" ",stripspaces($next),2);
return $prop;
}
function ftp_filesize($conn_id, $path)
{
//some files use PHP 5 syntax, must include correct files for PHP 4
if(version_compare(PHP_VERSION, "5.0.0")>=0)
{
$contents=ftp_raw($conn_id, "SIZE $path");
return substr($contents[0], strpos($contents[0], " "));
}
else
{
$dir=substr($path, 0, strrpos($path, "/")+1);
$filename=substr($path, strrpos($path, "/")+1);
$contents=ftp_rawlist($conn_id, $dir);
foreach($contents as $entry)
{
$prop=ftpProcessEntry($entry);
if($prop['filename']=="." || $prop['filename']=="..")
continue;
if($prop['filename']==$filename)
return $prop['size'];
}
}
}
?>
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