) . "\n";
$outputPath = '/resources/src/mediawiki.Title/phpCharToUpper.json';
$file = fopen( $IP . $outputPath, 'w' );
+ if ( !$file ) {
+ $this->fatalError( "Unable to write file \"$IP$outputPath\"" );
+ }
fwrite( $file, $mappingJson );
$this->output( count( $data ) . " differences found.\n" );