非常感谢老师的回答：全选，反选。已完成。可是PHP批量删除记录同时删除文件。代码不知怎么弄。请您给我代码好吗？

if (!function_exists("GetSQLValueString")) {

function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "")

{

$theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;

$theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);

switch ($theType) {

case "text":

$theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";

break;

case "long":

case "int":

$theValue = ($theValue != "") ? intval($theValue) : "NULL";

break;

case "double":

$theValue = ($theValue != "") ? "'" . doubleval($theValue) . "'" : "NULL";

break;

case "date":

$theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";

break;

case "defined":

$theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;

break;

}

return $theValue;

}

}

$colname_spml = "-1";

if (isset($_GET['sid'])) {

$colname_spml = $_GET['sid'];

}

mysql_select_db($database_conn, $conn);

$query_spml = sprintf("SELECT * FROM spmlb WHERE sid = %s", GetSQLValueString($colname_spml, "int"));

$spml = mysql_query($query_spml, $conn) or die(mysql_error());

$row_spml = mysql_fetch_assoc($spml);

$totalRows_spml = mysql_num_rows($spml);

$ID_Dele= implode(",",$_POST['sid']);

mysql_select_db($database_conn, $conn);

mysql_query ("DELETE FROM spmlb WHERE sid in ($ID_Dele)");

echo '

alert("删除成功!")

location.href="ht_spgl.php"

';

mysql_free_result($spml);

?>