php連接mysql并查詢數(shù)據(jù)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(shù)據(jù)庫；最后通過查詢語句“select* from goods”進(jìn)行查詢即可。

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php連接、查詢mysql數(shù)據(jù)庫

<?php /**  * Created by PhpStorm.  * User: karnetkarnet  * Date: 17/3/3  * Time: 09:46  */ define('SQL_HOST','localhost');//數(shù)據(jù)庫地址 define("SQL_USER","root");//數(shù)據(jù)庫用戶名 define("SQL_PASSWORD","");//數(shù)據(jù)庫密碼 define("SQL_DATABASE","shop");//連接的數(shù)據(jù)庫名字 define("SQL_PORT","3306");//數(shù)據(jù)庫端口號(hào),默認(rèn)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(shù)據(jù)庫 //mysqli_select_db(SQLDATABASE); //查詢語句 $sql = "select* from goods"; //查詢 $results = $mysql -> query($sql); print_r($results); //遍歷循環(huán)打印數(shù)據(jù) while ($row = mysqli_fetch_array($results)) { //    print_r($row);     echo $row['goods_name'];     echo "<br>"; } //釋放 mysqli_free_result($results); //關(guān)閉連接 mysqli_close($mysql); ?>