Question

I have a PHP file that is ran every so often to delete old rows of data. Inside the PHP file I have example.

mysql_query("DELETE FROM table1 where timeout < $timestamp");

The problem I notice lately since I have about 11 of those lines for 11 different tables ran all at once every so often.

I now notice more lines I add it won’t delete the rows on certain tables. If I run it manually like this

DELETE FROM table1 where timeout < 1337143007 

It will delete the old rows fine. So am I missing something am I running Delete From on to many tables at once?

Thank you

Answer 1

mysql_query("DELETE FROM table1 where timeout < $timestamp");

The only possible culprit here seams to be your $timestamp.
Try to echoing/log the query as you run-it and you’ll probably find the culprit.