deleteSelfExternals.php

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<?php
require_once __DIR__ . '/Maintenance.php';
 
class DeleteSelfExternals extends Maintenance {
    public function __construct() {
        parent::__construct();
        $this->addDescription( 'Delete self-references to $wgServer from externallinks' );
        $this->setBatchSize( 1000 );
    }
 
    public function execute() {
        global $wgServer;
 
        // Extract the host and scheme from $wgServer
        $bits = wfParseUrl( $wgServer );
        if ( !$bits ) {
            $this->error( 'Could not parse $wgServer' );
            exit( 1 );
        }
 
        $this->output( "Deleting self externals from $wgServer\n" );
        $db = $this->getDB( DB_MASTER );
 
        // If it's protocol-relative, we need to do both http and https.
        // Otherwise, just do the specified scheme.
        $host = $bits['host'];
        if ( isset( $bits['port'] ) ) {
            $host .= ':' . $bits['port'];
        }
        if ( $bits['scheme'] != '' ) {
            $conds = [ LinkFilter::getQueryConditions( $host, [ 'protocol' => $bits['scheme'] . '://' ] ) ];
        } else {
            $conds = [
                LinkFilter::getQueryConditions( $host, [ 'protocol' => 'http://' ] ),
                LinkFilter::getQueryConditions( $host, [ 'protocol' => 'https://' ] ),
            ];
        }
 
        foreach ( $conds as $cond ) {
            if ( !$cond ) {
                continue;
            }
            $cond = $db->makeList( $cond, LIST_AND );
            do {
                $this->commitTransaction( $db, __METHOD__ );
                $q = $db->limitResult( "DELETE /* deleteSelfExternals */ FROM externallinks WHERE $cond",
                    $this->mBatchSize );
                $this->output( "Deleting a batch\n" );
                $db->query( $q, __METHOD__ );
            } while ( $db->affectedRows() );
        }
    }
}
 
$maintClass = DeleteSelfExternals::class;
require_once RUN_MAINTENANCE_IF_MAIN;