Adam, Ruth, Ethan and Ori’s Wiki

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 {MarkupMasterIndex$Title}” displays as “Markup Master Index”.

Default page variables

The page variables defined for PmWiki are:

In addition to the above, there are some page-invariant variables available through this markup:

Special references

Special referenced variables are used to specify the context of the variable when:

• the variable is included into a destination (target) page
• the variable is used in a sidebar, header, or footer.

Prefixing the variable name with an asterisk (*) means the variable’s value is related to the browsed page or main (body) page.

If the other pages are protected and the visitor has no read permissions, Page Variables, unlike PageTextVariables, normally display the values. While most variables do not contain sensitive information, some of them could do: $Title, $Description and those starting with $LastModified.

Administrators and module developers can redefine the sensitive page variables to respect authentications, by using the “$authpage” variable instead of “$page” in the definition. The following snippet can be added in local/config.php — it will rewrite the default possibly sensitive definitions to the secure ones.

foreach($FmtPV as $k=>$v) {
  if(preg_match('/^\\$(Title(spaced)?|LastModified(By|Host|Summary|Time)?|Description)$/', $k))
    $FmtPV[$k] = str_replace('$page', '$authpage', $v);
}

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"]';
$FmtPV['$WikiTitle'] = '$GLOBALS["WikiTitle"]';

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"'.

You can make a string a Page Variable by adding the string to the $GLOBALS[] array first.

## Create a {$BaseUrl} page variable
$GLOBALS['BaseUrl'] = $UrlScheme."://".$_SERVER["HTTP_HOST"]."/Wiki";
$FmtPV['$BaseUrl'] = '$GLOBALS["BaseUrl"]';

You can also have a function create the string.

## Create a {$BaseUrl} page variable
function BaseUrl() { 
  global $UrlScheme;
  return $UrlScheme."://".$_SERVER['HTTP_HOST']."/Wiki"; 
}
$FmtPV['$BaseUrl'] = 'BaseUrl()';

See also

• Cookbook:More custom page variables
• PmWiki.Variables — about variables internal to PmWiki.
• PmWiki.MarkupMasterIndex — complete list of PmWiki markups.
• PageTextVariables — page variables automatically made available through natural page markup or explicit page markup within the wiki text of the page.
• PmWiki.Markup Expressions — markup expressions can manipulate page variables

# add page variable {$PageCreationDate} in format yyyy-mm-dd
$FmtPV['$PageCreationDate'] = 'strftime("%Y-%m-%d", $page["ctime"])';

 $FmtPV['$Created'] = "strftime(\$GLOBALS['TimeFmt'], \$page['ctime'])";