mysql建議連接及查詢資料表PHP程式碼

本文主要和大家分享原生mysql查詢,選擇資料庫,建議連線及查詢資料表PHP完整流程，希望能幫助大家。

用mysqli_connect,mysql_connect,mysqli_select_db,mysql_select_db
,mysqli_query,mysql_query直接選擇資料庫.資料表並進行查詢完整程式碼

##database.php檔案為資料庫的使用者或密碼等

<?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);

               

使用mysqli_connect,mysql_connect,mysqli_select_db,mysql_select_db

,mysql#query,mysqli_select_db,mysql_select_db
,mysql#query,mysqli_select_db,mysql_select_db

,mysql#query,mysqli_select_db,mysql_select_db

,mysql#query,mysqli_select.的用戶或密碼等

<?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);
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