PHP 数据库相关函数

0、PHP选择mysql的原因，强大、免费。oracle后期维护成本太大1、连接到一个 MySQL 数据库$con = mysql_connect("localhost","peter","abc123");if (!$con){die('Could not connect: ' . mysql_error());}//创建数据库if (mysql_query("CREATE DATABASE my_db",$con)){echo "Database created";}else{echo "Error creating database: " . mysql_error();}//创建数据表// Create table in my_db databasemysql_select_db("my_db", $con);$sql = "CREATE TABLE Persons (FirstName varchar(15),LastName varchar(15),Age int)";mysql_query($sql,$con);//插入数据mysql_query("INSERT INTO Persons (FirstName, LastName, Age) VALUES ('Peter', 'Griffin', '35')");//查询数据表mysql_select_db("my_db", $con);$result = mysql_query("SELECT * FROM Persons");while($row = mysql_fetch_array($result)){echo $row['FirstName'] . " " . $row['LastName'];echo "<br />";}mysql_close($con);