错误：mysql扩展已被弃用，并将在未来被删除：使用库MySQLi或PDO来代替

Question

我从一个PHP文件收到此错误：

The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead 

下面是相关的代码的副本：

<?php 
$con = mysql_connect("localhost","username","password"); 
if (!$con) { 
    die('Could not connect: ' . mysql_error()); 
} 

mysql_select_db("database_name", $con); 

$result = mysql_query("SELECT COUNT(*) FROM `tbltodolist` WHERE status = 'Pending'"); 
$row = mysql_fetch_array($result); 
$total = $row[0]; 

echo $total; 

mysql_close($con); 
?> 

是否有任何简单的方法切换到使用mysqli来避免错误？

Answer 1

以这种方式使用mysqli来避免通知。因为mysql已被新版本的php所弃用。

<?php 
$con = mysqli_connect("localhost","username","password","database_name"); 
if (!$con) { 
    die('Could not connect: ' . mysqli_error()); 
} 
$result = mysqli_query($con,"SELECT COUNT(*) FROM `tbltodolist` WHERE status = 'Pending'"); 
$row = mysqli_fetch_array($result); 
$total = $row[0]; 

echo $total; 

mysqli_close($con); 
?> 

Answer 2

使用的mysqli，而不是MySQL的。欲了解更多信息请关注此Link或此Link