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How to delete table contents in batches in php

Sep 22, 2021 am 09:07 AM

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php method to delete table contents in batches: 1. Create a "list_pl.php" file; 2. Create a "shanchu.php" file to implement the deletion function; 3. Create a modification and update page; 4. Just create the batch deletion page "adminDel.php".

How to delete table contents in batches in php

The operating environment of this article: Windows 7 system, PHP version 7.1, Dell G3 computer.

How to delete table contents in batches in php?

php operation form data [including batch deletion]

Rendering:

list_pl.php:

&lt;?php

$con = mysqli_connect(&#39;localhost&#39;,&#39;root&#39;,&#39;123456&#39;,&#39;test&#39;);
mysqli_set_charset($con,&#39;utf8&#39;);
if(!$con){
die(&#39;Could not connect:&#39; . mysql_error($con));
}
$sql = &quot;select * from login&quot;;
$result = mysqli_query($con,$sql);
$rows = array();
while($row = mysqli_fetch_assoc($result)){
  $rows[] = $row; 
}  

?&gt;
&lt;!DOCTYPE html PUBLIC &quot;-//W3C//DTD XHTML 1.0 Transitional//EN&quot; &quot;http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd&quot;&gt;
 
 &lt;html xmlns=&quot;http://www.w3.org/1999/xhtml&quot;&gt;
  
 &lt;head&gt;  
   &lt;meta http-equiv=&quot;Content-Type&quot; content=&quot;text/html; charset=utf-8&quot; /&gt;  
   &lt;title&gt;无标题文档&lt;/title&gt;
  &lt;style&gt;
      *{padding:0;margin:0;}
      .pd-lr{padding: 5px 20px}
  &lt;/style&gt;
 &lt;/head&gt;
 &lt;body&gt;
 &lt;table width=&quot;100%&quot; border=&quot;1&quot; cellpadding=&quot;0&quot; cellspacing=&quot;0&quot;&gt;  
 &lt;thead&gt;
   &lt;tr&gt;  
     &lt;td width=&quot;30&quot;&gt;
        全选：&lt;input id=&quot;checkAll&quot; type=&quot;checkbox&quot;&gt;
     &lt;/td&gt;
     &lt;td width=&quot;30&quot;&gt;id&lt;/td&gt;
     &lt;td width=&quot;30&quot;&gt;用户名&lt;/td&gt;
     &lt;td width=&quot;30&quot;&gt;密码&lt;/td&gt;
     &lt;td width=&quot;30&quot;&gt;邮箱&lt;/td&gt;
     &lt;td width=&quot;40&quot;&gt;操作&lt;/td&gt;    
     &lt;td width=&quot;30&quot;&gt;提交时间&lt;/td&gt;    
   &lt;/tr&gt;
&lt;/thead&gt;
&lt;tbody&gt;
   &lt;?php foreach($rows as $k =&gt; $v) {
     ?&gt;
		&lt;tr&gt;
		 &lt;td&gt;&lt;input type=&quot;checkbox&quot; name=&quot;box&quot; value=&quot;&lt;?= $v[&#39;id&#39;] ?&gt;&quot; class=&quot;checkOne&quot;&gt;&lt;/td&gt;
		 &lt;td&gt;&lt;?php echo $v[&#39;id&#39;];?&gt;&lt;/td&gt;  
		 &lt;td&gt;&lt;?php echo $v[&#39;username&#39;];?&gt;&lt;/td&gt;  
		 &lt;td&gt;&lt;?php echo $v[&#39;password&#39;];?&gt;&lt;/td&gt; 
		 &lt;td&gt;&lt;?php echo $v[&#39;email&#39;];?&gt;&lt;/td&gt;
		 &lt;td&gt;
		   &lt;a href=&quot;javascript:confirm_delete(&#39;shanchu.php?sno=&lt;?php echo $v[&#39;id&#39;];?&gt;&#39;)&quot;&gt;删除&lt;/a&gt;
		   &lt;a href=&#39;xiugai.php?sno=&lt;?php echo $v[&#39;id&#39;];?&gt;&#39;&gt;修改&lt;/a&gt; 
		 &lt;/td&gt; 
		 &lt;td&gt;&lt;?php echo $v[&#39;CreateTime&#39;];?&gt;&lt;/td&gt;
		&lt;/tr&gt;
   &lt;?php } ?&gt;
  &lt;/tbody&gt;
 &lt;/table&gt;
 &lt;p class=&quot;pd-lr&quot;&gt;
 &lt;button style=&quot;float:left;&quot;&gt;批量删除&lt;/button&gt;
 &lt;!-- 数据表的总条数 --&gt;
 &lt;p style=&quot;float:right;display:inline-block;&quot;&gt;总共&lt;span&gt;&lt;?php
        $sql2 = &quot;SELECT COUNT(*) FROM login&quot;; //获取某一张表的所有数据
        $all_value = $con-&gt;query($sql2);  
			while ($nums=$all_value-&gt;fetch_assoc()) {   //输出每一行数据 
			 echo ($nums[&#39;COUNT(*)&#39;]); //获取数据库总条数
            } ?&gt;&lt;/span&gt;条&lt;/p&gt;
 &lt;/p&gt; 

 &lt;script src=&quot;./jquery-3.2.1.min.js&quot;&gt;&lt;/script&gt;
 &lt;script&gt;
  //  单项删除
   function confirm_delete(url){
	  if(confirm(&#39;您确定要执行删除操作？&#39;)){
		window.location.href=url;
		}else{
			return false;
			}
	}
   // 全选，反选
$(&quot;#checkAll&quot;).on(&#39;change&#39;, function () {
    if ($(this).is(&quot;:checked&quot;)) { // 全选
        $(&quot;.checkOne&quot;).prop(&quot;checked&quot;,true);
    } else { // 反选
        $(&quot;.checkOne&quot;).prop(&quot;checked&quot;,false);
    }
});
// 批量删除
$(&#39;button&#39;).click(function(){
            var ids=$(&#39;.checkOne:checkbox&#39;);
            var str=&#39;&#39;;
            var count=0;
            for(var i=0;i&lt;ids.length;i++){
                if(ids.eq(i).is(&#39;:checked&#39;)){
                    str+=&#39;,&#39;+ids.eq(i).val();
                    count++;
                }
            }
            var str=str.substr(1);
            if(confirm(&#39;你确定要删除这&#39;+count+&#39;条数据吗？&#39;)){
                //获取id后删除
                $.ajax({
                    type:&#39;GET&#39;,
                    url:&#39;adminDel.php&#39;,
                    // contentType: &quot;application/json;charset=utf-8&quot;,
                    data:{&#39;str&#39;:str},
                    // dataType:&#39;json&#39;,//用get方法时不指定这项(可能是json数据不够严谨)
                    success:function(res){
                        if(res&gt;0){
                            for(var i=ids.length-1;i&gt;=0;i--){
                                if(ids.eq(i).is(&#39;:checked&#39;)){
                                    ids.eq(i).parent().parent().remove();
                                }
                            }
                        }
                        alert(&#39;删除成功！&#39;);
                        window.location.reload();
                    },
                    error:function(data){ 
                    console.log(&quot;数据加载失败&quot;,data); 
                } 
                })
            }
            return false;
        });
   
 &lt;/script&gt;
 &lt;/body&gt;
 &lt;/html&gt;

Copy after login

shanchu.php (You can also directly fill in the path of adminDel.php when deleting a single item):

&lt;?php
 
$aaa = $_GET [&quot;sno&quot;]; //删除方式使用的get，照旧
 
$db = new mysqli(&quot;localhost&quot;,&quot;root&quot;,&quot;123456&quot;,&quot;test&quot;);
 
$sql = &quot;delete from login WHERE id=&#39;{$aaa}&#39;&quot;;
 
if($db-&gt;query($sql)){
    //  header(&quot;location:list.php&quot;);
    echo &quot;&lt;script&gt;alert(&#39;删除成功！&#39;);window.location.href=&#39;list.php&#39;&lt;/script&gt;&quot; ;
}else{
    echo &quot;删除失败&quot;;
}

?&gt;

Copy after login

xiugai.php (modify page):

&lt;html xmlns=&quot;http://www.w3.org/1999/xhtml&quot;&gt;
 
&lt;head&gt;
 
  &lt;meta http-equiv=&quot;Content-Type&quot; content=&quot;text/html; charset=utf-8&quot; /&gt;
 
  &lt;title&gt;无标题文档&lt;/title&gt;
 
&lt;/head&gt;
&lt;body&gt;
&lt;h1&gt;修改&lt;/h1&gt;
 

&lt;?php
 
$sno = $_GET{&quot;sno&quot;};
 
$db = new mysqli(&quot;localhost&quot;,&quot;root&quot;,&quot;123456&quot;,&quot;test&quot;);
 
$sql = &quot;select * from login WHERE id=&#39;{$sno}&#39;&quot;;
 
$r = $db-&gt;query($sql);
 
$arr = $r-&gt;fetch_row();
 ?&gt;

&lt;form action=&quot;update.php&quot; method=&quot;post&quot;&gt;
&lt;p&gt;id：&lt;input type=&quot;text&quot; name=&quot;id&quot; value=&quot;&lt;?php echo $arr[0]; ?&gt;&quot;/&gt;&lt;/p&gt;  
&lt;p&gt;用户名：&lt;input type=&quot;text&quot; name=&quot;username&quot; value=&quot;&lt;?php echo $arr[1]; ?&gt;&quot;/&gt;&lt;/p&gt;  
&lt;p&gt;密码：&lt;input type=&quot;text&quot; name=&quot;password&quot; value=&quot;&lt;?php echo $arr[2]; ?&gt;&quot;/&gt;&lt;/p&gt;  
&lt;p&gt;邮箱：&lt;input type=&quot;text&quot; name=&quot;email&quot; value=&quot;&lt;?php echo $arr[4]; ?&gt;&quot;/&gt;&lt;/p&gt; 
&lt;/p&gt;
  &lt;p&gt;&lt;input type=&quot;submit&quot; value=&quot;修改完毕&quot;/&gt;&lt;/p&gt;
&lt;/form&gt;

&lt;/body&gt;
 
&lt;/html&gt;

Copy after login

xiugai.php The update page can also be written like this:

&lt;?php
 
//创建连接：四个参数分别为 服务器地址、用户名、密码、数据库名
$conn = mysqli_connect(&quot;localhost&quot;,&quot;root&quot;,&quot;123456&quot;,&quot;test&quot;);
$sno = $_GET{&quot;sno&quot;}; 
//查询数据的sql语句
$sql = &quot;select * from login WHERE id=&#39;{$sno}&#39;&quot;;
 
//执行语句接收返回值
$result = mysqli_query($conn,$sql);
//输错查询的数据
while ($row = mysqli_fetch_array($result)){?&gt;
&lt;style type=&quot;text/css&quot;&gt;
	.list{margin: 0 auto;}
	.list p{font-size: 1rem;padding: 5px 0;}
	.list p span{display: inline-block;width: 100px;}
	.list p input{padding: 5px 0;outline:none;border: 1px solid #ccc;border-radius: 4px;-webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075);box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075);-webkit-transition: border-color ease-in-out .15s, -webkit-box-shadow ease-in-out .15s;-o-transition: border-color ease-in-out .15s, box-shadow ease-in-out .15s;transition: border-color ease-in-out .15s, box-shadow ease-in-out .15s;}
	.list p input:focus {border-color: #66afe9;outline: 0;-webkit-box-shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(102, 175, 233, .6);box-shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(102, 175, 233, .6);}
	.list .up_btn input{padding: 5px 10px;font-size: 1rem;border: 1px solid #2285ed;background-color: #FFF;}
	.list .up_btn input:hover{background-color: #2285ed;color: #fff;}
	.tran-b{-webkit-transition: all ease-out .5s;-o-transition: all ease-out .5s;transition: all ease-out .5s;}
&lt;/style&gt;
&lt;form action=&quot;./update.php&quot; method=&quot;post&quot; class=&quot;list&quot;&gt;
	&lt;p&gt;&lt;span style=&quot;color: #2285ed;&quot;&gt;id：&lt;input type=&quot;hidden&quot; value=&quot;&lt;?php echo $row[&#39;id&#39;];?&gt;&quot; name=&quot;id&quot; /&gt;&lt;?php echo $row[&#39;id&#39;];?&gt;&lt;/span&gt;&lt;/p&gt;
	&lt;p&gt;&lt;span&gt;用户名：&lt;/span&gt;&lt;input type=&quot;text&quot; name=&quot;username&quot; value=&quot;&lt;?php echo $row[&#39;username&#39;];?&gt;&quot; /&gt;&lt;/p&gt;
	&lt;p&gt;&lt;span&gt;密码：&lt;/span&gt;&lt;input type=&quot;text&quot; name=&quot;password&quot; value=&quot;&lt;?php echo $row[&#39;password&#39;];?&gt;&quot; /&gt;&lt;/p&gt;
	&lt;p&gt;&lt;span&gt;邮箱：&lt;/span&gt;&lt;input type=&quot;text&quot; name=&quot;email&quot; value=&quot;&lt;?php echo $row[&#39;email&#39;];?&gt;&quot; /&gt;&lt;/p&gt;
	&lt;/p&gt;
	&lt;p class=&quot;up_btn&quot;&gt;&lt;input type=&quot;submit&quot; value=&quot;修改完毕&quot; class=&quot;tran-b&quot;/&gt;&lt;/p&gt;
&lt;/form&gt;
&lt;?php }?&gt;

Copy after login

update.php (update Page):

&lt;?php
error_reporting(E_ALL ^ E_NOTICE);
$id = $_POST[&quot;id&quot;];
$username = $_POST[&quot;username&quot;];
$password = $_POST[&quot;password&quot;];
$email = $_POST[&quot;email&quot;];
 
$db = new mysqli(&quot;localhost&quot;,&quot;root&quot;,&quot;123456&quot;,&quot;test&quot;);
 
$sql = &quot;update login set username=&#39;{$username}&#39;,password=&#39;{$password}&#39;,email=&#39;{$email}&#39; WHERE id=&#39;{$id}&#39;&quot;;

if($db-&gt;query($sql)){
    //  header(&quot;location:list.php&quot;);
    echo &quot;&lt;script&gt;alert(&#39;修改成功！&#39;);window.location.href=&#39;list_pl.php&#39;&lt;/script&gt;&quot; ;
}else{
    echo &quot;修改失败&quot;;
}     

?&gt;

Copy after login

adminDel.php (batch delete page):

&lt;?php  
error_reporting(E_ALL ^ E_NOTICE); 
    // header(&#39;content-type:text/html;charset=utf-8&#39;);
    // header(&#39;Content-type: application/json;charset=utf-8&#39;);
    $str=$_GET[&#39;str&#39;];
    // echo $str;
    $link = mysqli_connect( &#39;localhost&#39; , &#39;root&#39; , &#39;123456&#39; , &#39;test&#39; );
    // mysqli_query($link,&#39;set names utf8&#39;);   
    $sql=&#39;delete from login where id in (&#39;.$str.&#39;)&#39;;
    mysqli_query($link,$sql);
?&gt;

Copy after login

Problems encountered:

ajax reports an error when submitting data. I am running it locally. Reference: https://ask.csdn.net/questions/325174dataType:'json' ,Change to dataType:'text', and it will work, or delete dataType:'json'.

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