User:Robchurch/Reset user skin preference

<?php

/**
 * Maintenance script to reset all users' skin preferences to a specified default
 *
 * @package MediaWiki
 * @subpackage Maintenance
 * @author Rob Church <robchur@gmail.com>
 */
 
require_once( 'commandLine.inc' );
echo( "Reset User Skins\n\n" );

if( count( $args ) > 0 ) {

        $fname = 'resetUserSkins';
        $skin = trim( $args[0] );

        $dbw =& wfGetDB( DB_MASTER );
        $dbw->begin();
        $res = $dbw->select( 'user', array( 'user_id', 'user_options' ), array(), $fname );
        if( $res && $dbw->numRows( $res ) > 0 ) {
        
                echo( $dbw->numRows( $res ) . " records to process. Updating..." );
                while( $row = $dbw->fetchObject( $res ) ) {
                        $prefs = explode( "\n", $row->user_options );
                        for( $i = 0; $i < count( $prefs ); $i++ ) {
                                if( preg_match( '/^skin=(.*)$/', $prefs[$i] ) )
                                        $prefs[$i] = 'skin=' . $skin;
                        }
                        $values['user_options'] = implode( "\n", $prefs );
                        $values['user_touched'] = $dbw->timestamp();
                        $dbw->update( 'user', $values, array( 'user_id' => $row->user_id ), $fname );
                }
                
                $dbw->commit();
                echo( "done.\n\n" );
                exit( 0 );
        
        } else {
                $dbw->commit();
                echo( "No users found.\n\n" );
                exit( 0 );
        }

} else {
        showUsage( 'Please provide the internal name of a skin to use.' );
        exit( 1 );
}

function showUsage( $error = false ) {
        if( $error )
                echo( "{$error}\n\n" );
        echo( "Resets all user skin preferences to a specified value. Useful for deploying\n" );
        echo( "a standard/corporate skin selection.\n\n" );
        echo( "\tUSAGE: php resetUserSkins.php <skin>\n" );
        echo( "\t<skin> : Internal name of the skin to use\n\n" );
}
 
?>