How to delete records in php

How to delete records in php: first find the id to be deleted on the view page; then create a "delete.php" page; finally use the "delete from table name where condition = value" statement to delete.

PHP delete database record

Specific question:

I have a table in the database with two elements: id and name. Now I want to read an id value from a form, and then delete the page to delete a row of records corresponding to this id. The form's method=get, but Deleting the page cannot realize the function. Experts can help me look at the code: Thank you

Back to view

< ?php

$link=mysql_connect("localhost","root","");

$db=mysql_select_db("aaa");

mysql_query(" set names utf8",$link);

$sql="delete from a where id='.$_GET['id']';//The error should be here

$result =mysql_query($sql,$link);

echo "Delete successfully! ";

?>

Solution

1. First find the id to be deleted on the view page:

<?php
$link=mysql_connect("localhost","root","管理员密码");
mysql_select_db("infosystem", $link);
$q = "SELECT * FROM info";
mysql_query("SET NAMES GB2312");
$rs = mysql_query($q, $link);
echo "<table>";
echo "<tr><td>部门名称</td><td>员工姓名</td><td>PC名称</td></tr>";
while($row = mysql_fetch_object($rs)) echo "<tr><td><a href=&#39;dodel.php?id=$row->id&#39;>del</a></td><td>$row->depart</td><td>$row->ename</td></tr>";
echo "</table>";
?>

2. Write a delete.php page with the following code:

<?php
$link =mysql_connect("localhost","root","管理员密码");
mysql_select_db("infosystem", $link);
$del_id=$_GET["id"];
$exec="delete from info where id=$del_id";
mysql_query($exec, $link);
echo "删除成功!";
mysql_close($link);
?>

Description: used for MySQL data The deleted SQL statement is:

delete from 表名 where 条件=值

The value here is received through $del_id=$_GET["id"] and passed to the SQL statement. Finally, the SQL statement is deleted through mysql_query.

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