authors (intermediate)
This page describes the "variables" that are associated with pages. Page variables have the form {$variable}, and can be used in page markup or in certain formatting strings in PmWiki. For example, the markup "{$Group}" renders in this page as "PmWiki".
Note that these variables do not necessarily exist in the PHP code, because they have to be determined for a specific page. (However, they are usable in FmtPageName strings.)
There is also the form {pagename$variable}, which returns the value of the variable for another page. For example, "{MarkupMasterIndex$Title}" displays as "Markup Master Index".
Default page variables
The page variables defined for PmWiki are:
{$Group} - page's group name, as in "PmWiki"
{$Groupspaced} - spaced group name, as in "Pm Wiki"
{$DefaultGroup} - default group name, as in "Main"
{$SiteGroup} - default group name for e.g. RecentChanges, as in "Site"
{$Name} - page name, as in "PageVariables"
{$Namespaced} - spaced page name, as in "Page Variables"
{$DefaultName} - name of default page, as in "HomePage"
{$FullName} - page's full name, as in "PmWiki.PageVariables"
{$Title} - page title (may differ from Name), as in "Page-specific Variables"
{$Titlespaced} - title/spaced page name, as in "Page-specific Variables"
{$Description} - page's description from the
(:description:) markup, as in "Documentation for "variables" that are associated with pages."
{$LastModified} - date page was edited, as in "2006 年 06 月 23 日, 10:02 上午"
{$LastModifiedBy} - page's last editor, as in "Pico"
{$LastModifiedHost} - IP of page's last editor, as in "12.33.45.37"
{$LastModifiedSummary} - Summary from last edit, as in "Supplied "as in" example for
{$ScriptUrl}"
Note: Enclose {$LastModifiedSummary} with [= and =] to avoid having PmWiki process any markup that may be contained in the summary.
{$Action} - page's url action argument, as in "browse"
In addition to the above, there are some page-invariant variables available through this markup:
{$Author} - the name of the person currently interacting with the site, as in ""
{$AuthId} - current authenticated id, as in ""
Please note the lower case 'd'. {$AuthID} returns nothing
{$Version} - PmWiki version, as in "pmwiki-2.1.27"
{$VersionNum} - The internal version number, as in "2001027"
Custom page variables
You may add custom page variables as a local customization. In a local configuration file or a recipe script, use the variable $FmtPV:
$FmtPV['$VarName'] = "'variable definition'";
$FmtPV['$CurrentSkin'] = '$GLOBALS["Skin"]';
Defines new Page Variable of name $CurrentSkin, which can be used in the page with {$CurrentSkin} (also for Conditional markup). It's necessary to use the single quotes nested inside double-quotes as shown above (preferred) or a double-quoted string nested inside single-quotes like '"this"'.
Making a {$WikiTitle} markup doesn't quite follow the formula above. Instead you need to use
$FmtPV['$WikiTitle'] = '$GLOBALS["WikiTitle"]';
See also
<< Conditional markup | Documentation Index | Markup master index? >>
Is there a variable like $LastModified, but which shows me the creation time?
No, but you can create one in config.php. For instance:
# add page variable {$PageCreationDate} in format yyyy-mm-dd
$FmtPV['$PageCreationDate'] = 'strftime("%Y-%m-%d", $page["ctime"])';
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