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.

<code class="php">$host = 'localhost';
$user = 'username';
$password = 'password';
$database = 'database_name';

$conn = mysql_connect($host, $user, $password);</code>

3. Select the database

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

<code class="php">mysql_select_db($database, $conn);</code>

4. Execute SQL query

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

<code class="php">$query = 'SELECT * FROM users';
$result = mysql_query($query, $conn);</code>

5. Process query results

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

<code class="php">while ($row = mysql_fetch_assoc($result)) {
  // 处理数据
}</code>

6. Close the connection

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

<code class="php">mysql_close($conn);</code>

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