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I have a datetime field (endTime) in mysql. I use gmdate() to populate this endTime field.
The value stored is something like 2009-09-17 04:10:48. I want to add 30 minutes to this endtime and compare it with current time. ie) the user is allowed to do a certain task only 30 minutes within his endTime. After 30 minutes of his endTime, i should not allow him to do a task.
how can i do that in php?
i'm using gmdate to make sure there are no zone differences.
Thanks in advance
416
To add minutes to a datetime you can use DATE_ADD() function from MySQL. In PHP, you can use strtotime(). select date_add(yourColumnName,interval 30 minute) from yourTableName; To use the above syntax, let us create a table.
The DATE_ADD() function adds a time/date interval to a date and then returns the date.
MySQL interval is an operator, which is based on the binary search algorithm to search the items and returns the value from 0 to N. It is mainly used to calculate the date and time values. We can use the following syntax to create an interval value: INTERVAL expr unit.
If you are using MySQL you can do it like this:
SELECT '2008-12-31 23:59:59' + INTERVAL 30 MINUTE;
For a pure PHP solution use strtotime
strtotime('+ 30 minute',$yourdate); Try this one
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