PHP--数据库创建
一、创建数据库
语法结构:
CREATE DATABASE database_name
示例:
<?php $con = mysql_connect("localhost","peter","abc123"); if (!$con) { die('Could not connect: ' . mysql_error()); } if (mysql_query("CREATE DATABASE my_db",$con)) { echo "Database created"; } else { echo "Error creating database: " . mysql_error(); } mysql_close($con); ?>
二、创建表
语法结构:
CREATE TABLE table_name ( column_name1 data_type, column_name2 data_type, column_name3 data_type, ....... )
示例(创建一个名为 "Persons" 的表,此表有三列。列名是 "FirstName", "LastName" 以及 "Age"):
<?php
$con = mysql_connect("localhost","peter","abc123");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
// Create database
if (mysql_query("CREATE DATABASE my_db",$con))
{
echo "Database created";
}
else
{
echo "Error creating database: " . mysql_error();
}
// Create table in my_db database
mysql_select_db("my_db", $con); //选择数据库(必须)
$sql = "CREATE TABLE Persons
(
FirstName varchar(15),
LastName varchar(15),
Age int
)";
mysql_query($sql,$con);
mysql_close($con);
?>