<code>$connect = mysqli_connect("host","user","password","db") or die("Error " . mysqli_error($connect));
$result = mysql_query('select * from admin',$connnet);
print(mysql_num_rows($result));
mysql_close();
</code>报错：
<code>Warning: mysql_query(): supplied argument is not a valid MySQL-Link resource Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource Warning: mysql_close(): no MySQL-Link resource supplied </code>
而使用面向对象方法则没有问题
请问这是什么问题？
<code>$connect = mysqli_connect("host","user","password","db") or die("Error " . mysqli_error($connect));
$result = mysql_query('select * from admin',$connnet);
print(mysql_num_rows($result));
mysql_close();
</code>报错：
<code>Warning: mysql_query(): supplied argument is not a valid MySQL-Link resource Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource Warning: mysql_close(): no MySQL-Link resource supplied </code>
而使用面向对象方法则没有问题
请问这是什么问题？
因为你写错字母了...
第一个变量是 $connect
第二个变量是 $connnect
多了一个n，好不？
当然，也要用mysqli_query而不是mysql_query
mysql_query -> mysqli_query
mysql_num_rows -> mysqli_num_rows
mysql_close -> mysqli_close
哥们你用mysqli_connect创建的连接得用mysqli_xxx来用
mysqli_xxx和mysql_xxx是不能混用的
每个人都需要一台速度更快、更稳定的 PC。随着时间的推移，垃圾文件、旧注册表数据和不必要的后台进程会占用资源并降低性能。幸运的是，许多工具可以让 Windows 保持平稳运行。
Copyright 2014-2025 https://www.php.cn/ All Rights Reserved | php.cn | 湘ICP备2023035733号
984
收藏
