Why is my PHP script encountering \'unknown table status: TABLE_TYPE\' error when executing the checkin function?

PHP File Encountering Execution Issue

The problem lies within the checkin function, specifically in the execution of the $query database query. The error "unknown table status: TABLE_TYPE" suggests an issue with the database connection or the availability of the Log table.

To resolve this problem, we can consider the following solutions:

1. Check Database Connection: Ensure that the database credentials and connection settings are correct by verifying the $DB parameter.

2. Create the Log Table: Confirm that the Log table exists by inspecting the database schema. If necessary, create the table using an SQL command like:

   CREATE TABLE Log (
    LogID INT NOT NULL AUTO_INCREMENT,
    TechID INT NOT NULL,
    ClientID INT NOT NULL,
    SiteID INT NOT NULL,
    LogTime DATETIME NOT NULL,
    Type VARCHAR(255) NOT NULL,
    PRIMARY KEY (LogID)
   );

   Copy after login
3. Use Prepared Statements: Parameterized queries, known as prepared statements, help prevent SQL injection attacks by executing the query first and then passing in the parameters. This eliminates the risk of syntax errors and unexpected behavior.
4. Log and Handle Database Errors: Include error handling code around the database operations to catch and log any errors that occur. This will provide more information for debugging purposes.
5. Review Network Settings: Verify that the database server and the PHP script can communicate over the network without any firewalls or other network configuration issues.
6. Check Database User Permissions: Ensure that the database user executing the queries has the necessary privileges to read and modify data in the Log table.

By addressing these potential issues, you should be able to resolve the execution problem and allow the program to execute as expected.

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