The suggestion to export is a good one, I just wanted to mention there is another way.
The query API you are calling (jobs.query()
) does not return the full dataset; it just returns a page of data, which is the first 2 MB of the results. You can set the maxResults
flag (described here) to limit this to a certain number of rows.
If you get back fewer rows than are in the table, you will get a pageToken
field in the response. You can then fetch the remainder with the jobs.getQueryResults()
API by providing the job ID (also in the query response) and the page token. This will continue to return new rows and a new page token until you get to the end of your table.
The example here shows code (in java in python) to run a query and fetch the results page by page.
There is also an option in the API to convert directly to CSV by specifying alt='csv'
in the URL query string, but I'm not sure how to do this in PHP.