本文實(shí)例講述了PHP使用mysql與mysqli連接Mysql數(shù)據(jù)庫的方法。分享給大家供大家參考，具體如下：

代碼很簡單直接上了

<?php

  /**

  * @Author:   HTL

  * @Description: Description

  */

  // 降低PHP默認(rèn)的錯誤級別

  // 只顯示除禁用以外的所有錯誤

  // 解決因?yàn)镻HP5.3+版本太高而導(dǎo)致在使用mysql_connect時出現(xiàn)的棄用警告“Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead”

  error_reporting(E_ALL ^ E_DEPRECATED);

  $db_host="localhost";

  $db_user="root";

  $db_passwd="";

  $db_name="mysql";

  echo("<BR>---------------------------mysql_connect------------------------<BR><BR>");

  $query = "SELECT SESSION_USER(), CURRENT_USER(),now();";

  $conn = mysql_connect($db_host, $db_user,$db_passwd);

  if (!$conn)

  {

   die('Could not connect: ' . mysql_error());

  }

  mysql_select_db($db_name, $conn);

  $result = mysql_query($query);

  while($row = mysql_fetch_array($result)){

   var_dump($row);

  }

  mysql_close($conn);

  echo("<BR>---------------------------mysqli_connect------------------------<BR><BR>");

  $conn = mysqli_connect($db_host, $db_user, $db_passwd,$db_name) ;

  if (!$conn)

  {

   die('Could not connect: ' . mysqli_error());

  }

  //execute the query.

  $result = mysqli_query($conn, $query);

  //display information:

  while($row = mysqli_fetch_array($result)) {

    var_dump($row);

  }

  mysqli_close($conn);

  exit();

?>

有圖有真相

希望本文所述對大家PHP程序設(shè)計有所幫助。