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It gets inserted as "000..." because you pass an invalid date/timsetamp value - don't use localtime in scalar context, but in list-context and use the resulting array to assemble a string as described in the MySQL documentation. What I don't understand is, what you want to achieve, as you don't get a date by subtracting old_date from now(), that could be used as a timestamp in a meaningful way, but an intervall in seconds. You shouldn't store these as timestamp-values but as integers - as they aren't timestamps (referring to a point in time). In short: I guess you try to solve the wrong problem, or you didn't state the real problem - or maybe both..., nevertheless reading the docs I pointed you to should enable you to format the values you have to solve your stated problem in the way you want - namely inserting the difference as sql-timestamp.
regards,
An intellectual is someone whose mind watches itself. In reply to Re^3: Timestamp problem
by Tomte
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