mysql recommended connection and query data table PHP code

This article mainly shares with you the complete process of native mysql query, database selection, suggested connection and query data table PHP. I hope it can help everyone.

Use mysqli_connect, mysql_connect, mysqli_select_db, mysql_select_db
, mysqli_query, mysql_query to directly select the database, data table and query the complete code

database.php file is the user or password of the database, etc.

<?phpreturn array (    &#39;default&#39; => array (        &#39;hostname&#39; => &#39;127.0.0.1&#39;,        &#39;database&#39; => &#39;phpcms&#39;,        &#39;username&#39; => &#39;root&#39;,        &#39;password&#39; => &#39;root&#39;,        &#39;tablepre&#39; => &#39;v9_&#39;,        &#39;charset&#39; => &#39;utf8&#39;,        &#39;type&#39; => &#39;mysql&#39;,        &#39;debug&#39; => true,        &#39;pconnect&#39; => 0,        &#39;autoconnect&#39; => 0
        ),
);?>

$mysql_user=include(PHPS_PATH.'/caches/configs/database.php');//得到数据库配置        $username=$mysql_user['default']['username'];        $password=$mysql_user['default']['password'];        $tablepre=$mysql_user['default']['tablepre'];        $database=$mysql_user['default']['database'];        $con = mysqli_connect($mysql_user['default']['hostname'],$username,$password);//句柄

mysqli_select_db($con,$database);//选择数据库 
$sql = ' SELECT * FROM '.$tablepre."pay_account where trade_sn='".$out_trade_no."'";//file_put_contents('3.txt',$sql);$result2=mysqli_query($con,$sql);$orderinfo=mysqli_fetch_array($result2);;$uid=$orderinfo['userid'];//更新数据库$sql4 = ' update  '.$tablepre."pay_account set status= 'succ'  where userid=".$uid ." and trade_sn='".$out_trade_no."'";        $result4=mysqli_query($con,$sql4);
                 mysqli_close($con);

             

Use mysqli_connect, mysql_connect, mysqli_select_db, mysql_select_db
, mysqli_query, mysql_query to directly select the database. Data table and query the complete code

database.php file is the database User or password, etc.

<?phpreturn array (    &#39;default&#39; => array (        &#39;hostname&#39; => &#39;127.0.0.1&#39;,        &#39;database&#39; => &#39;phpcms&#39;,        &#39;username&#39; => &#39;root&#39;,        &#39;password&#39; => &#39;root&#39;,        &#39;tablepre&#39; => &#39;v9_&#39;,        &#39;charset&#39; => &#39;utf8&#39;,        &#39;type&#39; => &#39;mysql&#39;,        &#39;debug&#39; => true,        &#39;pconnect&#39; => 0,        &#39;autoconnect&#39; => 0
        ),
);?>

$mysql_user=include(PHPS_PATH.'/caches/configs/database.php');//得到数据库配置        $username=$mysql_user['default']['username'];        $password=$mysql_user['default']['password'];        $tablepre=$mysql_user['default']['tablepre'];        $database=$mysql_user['default']['database'];        $con = mysqli_connect($mysql_user['default']['hostname'],$username,$password);//句柄

mysqli_select_db($con,$database);//选择数据库 
$sql = ' SELECT * FROM '.$tablepre."pay_account where trade_sn='".$out_trade_no."'";//file_put_contents('3.txt',$sql);$result2=mysqli_query($con,$sql);$orderinfo=mysqli_fetch_array($result2);;$uid=$orderinfo['userid'];//更新数据库$sql4 = ' update  '.$tablepre."pay_account set status= 'succ'  where userid=".$uid ." and trade_sn='".$out_trade_no."'";        $result4=mysqli_query($con,$sql4);
                 mysqli_close($con);
相关推荐：

mysql查询表里的重复数据方法

<a href="http://www.php.cn/mysql-tutorials-358763.html" target="_self">详细介绍MySQL查询优化</a><br/>

The above is the detailed content of mysql recommended connection and query data table PHP code. For more information, please follow other related articles on the PHP Chinese website!