This article will introduce a good introductory example of PHP mysql to PHP beginners. We connect to the database and display the record examples in the database. Friends can refer to it.
Connect to a MySQL database
Before you can access and process data in the database, you must create a connection to the database.
In PHP, this task is accomplished through the mysql_connect() function.
Grammar
mysql_connect(servername,username,password);
In the example below, we store the connection in a variable ($con) for later use in the script. If the connection fails, the "die" part will be executed:
The code is as follows
| 代码如下 |
复制代码 |
|
$con = mysql_connect("localhost","peter","abc123");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
// some code
?>
|
|
Copy code
|
| 代码如下 |
复制代码 |
|
mysql_connect("localhost","root","");
mysql_select_db("cinema");
$_sql="select * from `t_hall`";
mysql_query("set names utf8");//编码设置为utf8
$query=mysql_query($_sql);
echo "
";
echo "| 影厅编号 | 大厅名 | 座位行 | 座位列 | ";
while($row=mysql_fetch_array($query))
{
//从数据库查询出来的字段
//将数据放到html的表格中
echo " | {$row['HID']} | {$row['HHall']} | {$row['HSeatline']} | {$row['HSeatrow']} | ";
}
echo " ";
?>
|
$con = mysql_connect("localhost","peter","abc123");
if (!$con)
{
die('Could not connect: ' . mysql_error());
} |
// some code
?>
After having the above foundation, we can query the database and display it
| The code is as follows
|
Copy code
mysql_connect("localhost","root","");
mysql_select_db("cinema");
$_sql="select * from `t_hall`";
mysql_query("set names utf8");//Encoding is set to utf8
$query=mysql_query($_sql);
echo "";
echo "| A theater number | Hall name | Seat row | Seat row";
while($row=mysql_fetch_array($query))
{
//Fields queried from the database
//Put the data into the html table
echo " | | {$row['HID']} | {$row['HHall']}< /td> | {$row['HSeatline']} | {$row['HSeatrow']} | ";
}
echo " ";
?>
http://www.bkjia.com/PHPjc/628663.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/628663.htmlTechArticleThis article will introduce a good php mysql entry example for php beginners. We connect to the database and display the database Friends can refer to the record examples in . Connect to a...
|
|
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
