Hướng dẫn php sqlite database locked

I have a PHP script that does the following in the order presented:

• Connect to a MySQL database
• Retrieve a single row of data
• Close the MySQL database connection
• Connect to a SQLite database on the local file system
• Insert the row of data into the SQLite database
• Close the SQLite database connection

I'm using PDO as the vehicle for both MySQL and SQLite. Here is the code for the insert:

$sqlite = new PDO['sqlite:activity.sqlite'];
$sqlite->setAttribute[ PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION ];

$lite =