f88c771756
* Convert "$dbw =& wfGetDB( DB_MASTER );" --> "$dbw = wfGetDB( DB_MASTER );" * convert "$skin =& $wgUser->getSkin();" --> "$skin = $wgUser->getSkin();" For the time being have not changed the function definitions of wfGetDB() or User::getSkin() [i.e. they are still both return-by-ref], so as to ensure the interface does not change for extensions [some of which may still be trying to run on PHP4 environments]. However presumably at some point this can be changed too. Also includes tiny tweak to newlines in parserTests - will show 1 rather than 2 newlines between the "Reading tests from" strings when in quiet mode.
57 lines
1.7 KiB
PHP
57 lines
1.7 KiB
PHP
<?php
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/**
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* @addtogroup SpecialPage
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*/
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/**
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* Constructor
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*
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* @param $par The namespace to get a random page from (default NS_MAIN),
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* used as e.g. Special:Randompage/Category
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*/
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function wfSpecialRandompage( $par = NS_MAIN ) {
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global $wgOut, $wgExtraRandompageSQL;
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$fname = 'wfSpecialRandompage';
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# Determine namespace
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$t = Title::newFromText ( $par . ":Dummy" ) ;
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$namespace = $t->getNamespace () ;
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# NOTE! We use a literal constant in the SQL instead of the RAND()
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# function because RAND() will return a different value for every row
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# in the table. That's both very slow and returns results heavily
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# biased towards low values, as rows later in the table will likely
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# never be reached for comparison.
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#
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# Using a literal constant means the whole thing gets optimized on
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# the index, and the comparison is both fast and fair.
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# interpolation and sprintf() can muck up with locale-specific decimal separator
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$randstr = wfRandom();
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$db = wfGetDB( DB_SLAVE );
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$use_index = $db->useIndexClause( 'page_random' );
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$page = $db->tableName( 'page' );
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$extra = $wgExtraRandompageSQL ? "AND ($wgExtraRandompageSQL)" : '';
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$sql = "SELECT page_id,page_title
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FROM $page $use_index
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WHERE page_namespace=$namespace AND page_is_redirect=0 $extra
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AND page_random>$randstr
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ORDER BY page_random";
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$sql = $db->limitResult($sql, 1, 0);
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$res = $db->query( $sql, $fname );
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$title = null;
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if( $s = $db->fetchObject( $res ) ) {
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$title =& Title::makeTitle( $namespace, $s->page_title );
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}
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if( is_null( $title ) ) {
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# That's not supposed to happen :)
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$title = Title::newMainPage();
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}
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$wgOut->reportTime(); # for logfile
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$wgOut->redirect( $title->getFullUrl() );
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}
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?>
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