Do you have trouble updating the database using php

I have a database called specials with a table called specials, the table has 6 rows, there are 3 records a record with an id of 1,2, and 3. One of the rows is called title. I have data already there but I want to update the data using a form. How ever my mysqli_query is not working.

Here is my code.

mysqli_query($connect, "UPDATE specials SET title=san diego WHERE id='1'");

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Assuming title is varchar and id is int

mysqli_query($connect, "UPDATE specials SET title='san diego' WHERE id=1");