php連接mysql并查詢數據的方法：首先創(chuàng)建PHP示例文件；然后通過用戶名密碼連接數據庫；最后通過查詢語句“select* from goods”進行查詢即可。

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php連接、查詢mysql數據庫

<?php /**  * Created by PhpStorm.  * User: karnetkarnet  * Date: 17/3/3  * Time: 09:46  */ define('SQL_HOST','localhost');//數據庫地址 define("SQL_USER","root");//數據庫用戶名 define("SQL_PASSWORD","");//數據庫密碼 define("SQL_DATABASE","shop");//連接的數據庫名字 define("SQL_PORT","3306");//數據庫端口號,默認為3306 //define("SQL_SOCKDET",""); $mysql = mysqli_connect(SQL_HOST,SQL_USER,SQL_PASSWORD,SQL_DATABASE,SQL_PORT) or  die(mysqli_error()); //連接不上切換數據庫 //mysqli_select_db(SQLDATABASE); //查詢語句 $sql = "select* from goods"; //查詢 $results = $mysql -> query($sql); print_r($results); //遍歷循環(huán)打印數據 while ($row = mysqli_fetch_array($results)) { //    print_r($row);     echo $row['goods_name'];     echo "<br>"; } //釋放 mysqli_free_result($results); //關閉連接 mysqli_close($mysql); ?>