萤火虫

简单一句，你好，世界！

="1") { if (file_exists ($countmath.".txt")){ $file = fopen($countmath.".txt","r"); $contents = fread($file,filesize($countmath.".txt")); echo $contents; fclose($file); echo "
"; $countmath=$countmath-1; } else{$countmath=$countmath-1;} } //循环结束 } showdir(); ?>