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If I use the PHP’s Time() function and in MySQL there are 4 fields DATE, DATETIME, TIMESTAMP, and TIME, which one I should use?
In PHP I use the Time() to record both the Date and the time like 5/10/2012, and the time is used to calculate the time elapsed.
Use what you need:
DATE:
stores only days ex: 2012-06-11
DATETIME:
stores days and time ex: 2012-06-11 12:49:31
TIMESTAMP:
stores days and time ex: 2012-06-11 12:49:31
MySQL has function that sets this field to current timestamp, when there was update in the row.
Maybe (don’t know right now) can be specified by number. Others must be specified ‘yyyy-mm-d hh:mm:ss’
to convert DB value to PHP’s time use strtotime()