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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
2. Connect to the database
$host = 'localhost';
$user = 'username';
$password = 'password';
$database = 'database_name';
$conn = mysql_connect($host, $user, $password);
3. Select the database
mysql_select_db($database, $conn);
4. Execute SQL query
$query = 'SELECT * FROM users';
$result = mysql_query($query, $conn);
5. Process query results
while ($row = mysql_fetch_assoc($result)) {
// 处理数据
}
6. Close the connection
mysql_close($conn);
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