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How to implement batch deletion operations in php

墨辰丷Original: 2018-05-22 11:21:553904browse

This article mainly introduces the PHP batch deletion operation, batch deletion page and .delete processing interface in detail. It has certain reference value. Interested friends can refer to it.

The specific content is as follows

1. Batch delete page piliangcaozuo.php

<body>
<form action="shanchu.php" method="post">
<table width="100%" border="1" cellpadding="0" cellspacing="0">
  <tr>
    <td><input type="checkbox" name="qx" onclick="quanxuan(this)"/>代号</td>
    <td>名称</td>   
  </tr>
  <?php
   require"DBDA.class1.php";
   $db = new DBDA();
   $sql = "select * from nation";
   $arr = $db->query($sql);
   foreach($arr as $v)
  {
    echo "<tr>
        <td><input type=&#39;checkbox&#39; name=&#39;ck[]&#39; class=&#39;ck&#39; value=&#39;{$v[0]}&#39;/>{$v[0]}</td>
        <td>{$v[1]}</td>   
       </tr>";
  }
  ?>  
</table>
<input type="submit" value="批量删除" />
</form>
</body>
<script type="text/javascript">
function quanxuan(qx)
{
  var ck=document.getElementsByClassName("ck");
  if(qx.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>
</html>

refers to the encapsulation class DBDA.class1. php

<?php
class DBDA
{
  public $host = "localhost";
  public $uid = "root";
  public $pwd = "123";
  public $dbname = "test_123";
  //执行SQL语句返回相应的结果
  //$sql 要执行的SQL语句
  //$type 代表SQL语句的类型，0代表增删改，1代表查询
  function query($sql,$type=1)
  {
    $db = new MySQLi($this->host,$this->uid,$this->pwd,$this->dbname);
    
    $result = $db->query($sql);
    
    if($type)
    {
      //如果是查询，显示数据
      return $result->fetch_all();
    }
    else
    {
      //如果是增删改，返回true或者false
      return $result;
    }
  }
}

2. Delete processing interface sanchu.php

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

require"DBDA.class.php";
$db = new DBDA();
//delete from nation where code in(&#39;n001&#39;,&#39;n002&#39;,&#39;n003&#39;)

$str = implode("&#39;,&#39;",$arr); 
$sql = "delete from nation where code in(&#39;{$str}&#39;)";
/*echo $sql;*/
if($db->query($sql,0))
{
  header("location:piliangcaozuo.php");
}

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