See also: Uploads, Uploads admin.
- $EnableUpload
- The upload.php script is automatically included from stdconfig.php if the $EnableUploadvariable is true in config.php.  Note that one may still need to set an upload password before users can upload (see UploadsAdmin).
- $UploadDir
- The directory where uploads are to be stored.  Defaults to uploads/ in the pmwiki directory, but can be set to any location on the server.  This directory must be writable by the webserver process if uploading is to occur.
- $UploadUrlFmt
- The url of the directory given by $UploadDir. By default,$UploadUrlFmtis derived from$PubDirUrland$UploadDir.
$IMapLinkFmt['Attach:'] 
The format of the upload link displayed when an attachment is present. No default is set. 
- $LinkUploadCreateFmt
-  The format of the upload link displayed when an attachment not present. Defaults to
      <a class='createlinktext' href='\$LinkUpload'>\$LinkText</a>
      <a class='createlink' href='\$LinkUpload'> Δ</a>");
- $UploadPrefixFmt
- Sets the prefix for uploaded files to allow attachments to be organized other than by groups.  Defaults to '/$Group'(uploads are organized per-group), but can be set to other values for sitewide or per-page attachments.
    $UploadPrefixFmt = '/$Group/$Name';    # per-page attachments
    $UploadPrefixFmt = '';                 # sitewide attachments
-  
-  It is recommended to have the $UploadPrefixFmtvariable defined in config.php, the same for all pages in the wiki, and not in group/page local configuration files. Otherwise you will be unable to link to attachments in other wikigroups.
- $EnableDirectDownload
- When set to 1 (the default), links to attachments bypass PmWiki and come directly from the webserver.  Setting $EnableDirectDownload=0; causes requests for attachments to be obtained via?action=download.  This allows PmWiki to protect attachments using a page's read permissions, but also increases the load on the server. Don't forget to protect your directory /uploads/ with a .htaccess file (Order Deny,Allow / Deny from all).
- $EnableUploadGroupAuth
- Set $EnableUploadGroupAuth= 1;
$EnableDirectDownload= 0;
- $EnableUploadVersions
- When set to 1 (default is 0), uploading a file to a location where a file of the same name already exists causes the old version to be renamed to file.ext,timestamp(instead of being overwritten).timestampis a Unix-style timestamp.
- $EnableUploadOverwrite
- When set to 1 (the default), determines if overwriting previously uploaded files is allowed.
- $UploadNameChars
- The set of characters allowed in upload names.  Defaults to "-\w. ", which means alphanumerics, hyphens, underscores, dots, and spaces can be used in upload names, and everything else will be stripped.
-  
- $UploadNameChars= "-\\w. !=+";    # allow exclamations, equals, and plus
-  
- $UploadNameChars= "-\\w. \\x80-\\xff"; # allow unicode
- $MakeUploadNamePatterns
-  An array of regular expression replacements that is used to normalize the filename of an attached file. First, everything but $UploadNameCharswill be stripped, then the file extension will be converted to lowercase. Administrators can override these replacements with a custom definition (the full array needs to be defined).
- $UploadDirQuota
- Overall size limit for all uploads.
   $UploadDirQuota = 100*1024;         # limit uploads to 100KiB
   $UploadDirQuota = 1000*1024;        # limit uploads to 1000KiB
   $UploadDirQuota = 1024*1024;        # limit uploads to 1MiB
   $UploadDirQuota = 25*1024*1024;     # limit uploads to 25MiB
   $UploadDirQuota = 2*1024*1024*1024; # limit uploads to 2GiB
- $UploadPrefixQuota
- Overall size limit for one directory containing uploads. This directory is usually uploads/GroupName(one for every WikiGroup), oruploads/Group/PageName(one for every page), depending on the variable$UploadPrefixFmt.
- $UploadMaxSize
- Maximum size for uploading files, 50000 octets (bytes) by default.
- $UploadExtSize
- Maximum size per extension, overriding the default in $UploadMaxSize.
   $UploadExtSize['zip'] = 2*1024*1024; # allow up to 2MiB for zip files