php批量删除

php批量删除可以实现多条或者全部数据一起删除

新建php文件 显示数据库中内容：

<table width="100%" border="1" cellpadding="0" cellspacing="0">
	<tr>
    	<td><input type="checkbox" id="qx" onclick="xuanzhong()" />全选</td>
    	<td>代号</td>
        <td>名称</td>
    </tr>

    <?php
	include("DBDA.class.php");
	$db = new DBDA();

	$sql = "select areacode，areaname from nation";
	$attr = $db->Query($sql);

	foreach($attr as $v)
	{
		echo "<tr>
		<td><input type='checkbox' name='ck[]' class='ck' value='{$v[0]}' /></td>
    	<td>{$v[0]}</td>
        <td>{$v[1]}</td>
    </tr>";
	}

	?>

</table>

　　

DBDA.class.php文件为数据库查询的类文件：

<?php
class DBDA
{
	public $host="localhost";
	public $uid = "root";
	public $pwd = "";
	public $dbname = "12345";

	//成员方法
	public function Query($sql,$type=1)
	{
		$db = new MySQLi($this->host,$this->uid,$this->pwd,$this->dbname);
		$r = $db->query($sql);

		if($type==1)
		{
			return $r->fetch_all();
		}
		else
		{
			return $r;
		}
	}
}

　　

在表格 中加入选择复选框：

<td><input type="checkbox" id="qx" onclick="xuanzhong()" />全选</td>

　　

<td><input type='checkbox' name='ck[]' class='ck' value='{$v[0]}' /></td>

　　

显示：

用js控制复选框的全选和取消全选：

<script type="text/javascript">
	function xuanzhong()
	{
		//取全选按钮的选中状态
		var zt = document.getElementById("qx").checked;

		//让下面所有的checkbox选中状态改变
		var ck = document.getElementsByClassName("ck");

		for(var i=0;i<ck.length;i++)
		{
			if(zt)
			{
				ck[i].setAttribute("checked","checked");
			}
			else
			{
				ck[i].removeAttribute("checked");
			}
		}
	}
</script>

　　

表格外侧追加form表单和提交按钮，并且用js控制点击删除时显示详细的提示信息完整php代码：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
</head>

<body>
<form action="shanchu.php" method="post">
<table width="100%" border="1" cellpadding="0" cellspacing="0">
	<tr>
    	<td><input type="checkbox" id="qx" onclick="xuanzhong()" />全选</td>
    	<td>代号</td>
        <td>名称</td>
    </tr>

    <?php
	include("DBDA.class.php");
	$db = new DBDA();

	$sql = "select areacode,areaname from chinastates";
	$attr = $db->Query($sql);

	foreach($attr as $v)
	{
		echo "<tr>
		<td><input type='checkbox' name='ck[]' class='ck' value='{$v[0]}' /></td>
    	<td>{$v[0]}</td>
        <td>{$v[1]}</td>
    </tr>";
	}

	?>

</table>
<input type="submit" value="删除" onclick="return tishi()" />
</form>
</body>
<script type="text/javascript">
	function xuanzhong()
	{
		//取全选按钮的选中状态
		var zt = document.getElementById("qx").checked;

		//让下面所有的checkbox选中状态改变
		var ck = document.getElementsByClassName("ck");

		for(var i=0;i<ck.length;i++)
		{
			if(zt)
			{
				ck[i].setAttribute("checked","checked");
			}
			else
			{
				ck[i].removeAttribute("checked");
			}
		}
	}

	function tishi()
	{
		//找所有选中项
		var ck = document.getElementsByClassName("ck");

		var str = "";

		for(var i=0;i<ck.length;i++)
		{
			if(ck[i].checked)
			{
				str += ck[i].value+",";
			}
		}

		return confirm("确定要删除以下数据么："+str+"");
	}
</script>
</html>

　　

最后新建删除处理的php文件;

<?php
$ck = $_POST["ck"];

include("DBDA.class.php");
$db = new DBDA();

//第一种方式
/*foreach($ck as $v)
{
	$sql = "delete from nation where code='{$v}'";
	$db->Query($sql,0);
}*/

//第二种方式
//in ('','','','','')
$str = implode("','",$ck);

$str = "('{$str}')"; 

$sql = "delete from nation where code in {$str}";
$db->Query($sql,0);

header("location:main.php");

　　

点击确定：

批量删除成功！