创建mysql事件按钮点击，删除表的第一行每5分钟 - create mysql event on button click, to delete the first row of table every 5 minutes?

create mysql event on button click, to delete the first row of table every 5 minutes?

这是我的php页面，它被称为按钮点击。

<?php
$host="localhost"; // Host name
$username="root"; // Mysql username
$password=""; // Mysql password
$db_name="parth"; // Database name

$con = mysql_connect("localhost","root","") or die('Could not connect to MySQL server: ' . mysql_error());
//echo"Connected to MySQL server";
mysql_select_db("parth") or die('Could not connect to database' . mysql_error());
//echo "Connected to Database";

$sql="CREATE EVENT gold ON SCHEDULE AT CURRENT_TIMESTAMP + INTERVAL 3 SECOND
DO
DELETE FROM table LIMIT 1;";
mysql_query($sql);
echo "done";
?>

显示回显信息"done"

但是事件查询没有被执行。我也给了他们特权。刚用了3秒做开发。

试试这个:

<?php
error_reporting(E_All);
$sHost = "localhost";
$sUsername = "root";
$sPassword = "";
$sDb = "parth";
$con = mysql_connect($sHost, $sUsername, $sPassword) or die('Could not connect to MySQL server: ' . mysql_error());
echo"Connected to MySQL server";
mysql_select_db($sDb) or die('Could not connect to database' . mysql_error());
echo "Connected to Database";
$sResult = mysql_query("CREATE EVENT gold ON SCHEDULE EVERY 3 MINUTE STARTS CURRENT_TIMESTAMP + INTERVAL 3 SECOND DO DELETE FROM table LIMIT 1;") or die(mysql_error());
echo "Done";