$out = "";
$where = array( 'page_namespace' => $namespace );
- global $wgMemc, $wgDBname;
- $key = "$wgDBname:allpages:ns:$namespace";
+ global $wgMemc;
+ $key = wfMemcKey( 'allpages', 'ns', $namespace );
$lines = $wgMemc->get( $key );
if( !is_array( $lines ) ) {