前台
<!DOCTYPE html>
<html>
<head>
<title>批量删除</title>
</head>
<body>
<script type="text/javascript">
//复选框
function checkall(all)
{
var ck = document.getElementsByClassName("ck"); if(all.checked)
{
for(var i=0;i<ck.length;i++)
{
ck[i].setAttribute("checked","checked");
}
}
else
{
for(var i=0;i<ck.length;i++)
{
ck[i].removeAttribute("checked");
}
}
}
</script> <form action="test.php" method="post">
<table border="1">
<tr><th><input type="checkbox" name="all" onclick="checkall(this)"/>id</th><th>名字</th></tr> <!-- 此处调用显示列表函数 -->
<?php show() ?> <tr><td colspan="3"><input type="submit" value="批量删除"></td></tr>
</table>
</form>
</body> <?php //显示列表
function show()
{
//连接数据库
@mysql_connect('localhost','root','');
mysql_select_db('test');
mysql_query('set names utf8'); $sql = "select id,name from test";
$res = mysql_query($sql); //循环取出数据
while($row = mysql_fetch_row($res))
{
echo "<tr>
<td>
<input type='checkbox' value='{$row[0]}' name='item[]' class='ck' />
{$row[0]}
</td>
<td>{$row[1]}</td>
</tr>";
}
}
?>
</html>
后台
<?php //接收post传来的数组
$arr = $_POST["item"]; /**
* 批量删除
* 思路：把前台批量选择的数据放在数组里，删除该数组即可
* @param $arr <array()>
* @return $res 成功or失败
*/
function batch_del($arr)
{
@mysql_connect('localhost','root','');
mysql_select_db('test');
mysql_query('set names utf8'); //把数组元素组合为字符串：
$str = implode("','",$arr);
//in 表示多个
$sql = "delete from test where id in('{$str}')";
$res = mysql_query($sql); if (!$res){
echo "删除失败";
}else { if (mysql_affected_rows()>0){
echo "删除成功";
}else {
echo "没有行受到影响";
}
}
} //调用批量删除函数
batch_del($arr);