Php只列出zip归档文件(不包括文件夹)

        $za = new ZipArchive();
        $za->open($source);
        for( $i = 0; $i < $za->numFiles; $i++ ){
            $stat = $za->statIndex( $i );
            $items = array( basename( $stat['name'] ) . PHP_EOL );
            foreach($items as $item) {
            echo $item;
            }
        }
        $za = new ZipArchive();
        $za->op