How to call the database in phpstudy

The steps to call the database using PHP Study are as follows: Import the SQL file and select the database version to be operated; use mysql_connect() to connect to the database, provide the host, user name, password and database name; use mysql_select_db() to select the database version to be operated. The operating database; use mysql_query() to execute SQL queries; use mysql_fetch_assoc() to obtain query results; use mysql_close() to close the database connection.

How to use PHP Study to call the database

1. Import the database

• Open the PHP Study control panel and click "Database".
• Click "Import Database" and select the SQL file to be imported.
• Select the MySQL version to import the database.

2. Connect to the database

• Open the PHP file or page.
• Use the mysql_connect() function to connect to the database.

$host = 'localhost'; $user = 'username'; $password = 'password'; $database = 'database_name'; $conn = mysql_connect($host, $user, $password);

3. Select the database

• Use the mysql_select_db() function to select the database to operate.

mysql_select_db($database, $conn);

4. Execute SQL query

• Use the mysql_query() function to execute SQL query.

$query = 'SELECT * FROM users'; $result = mysql_query($query, $conn);

5. Process query results

• Use the mysql_fetch_assoc() function to obtain the query results.

while ($row = mysql_fetch_assoc($result)) { // 处理数据 }

6. Close the connection

• Use the mysql_close() function to close the database connection.

mysql_close($conn);

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