Difference between only time in php

[ludah]

Please Can someone help
me on this

Am creating a timetable system and i want to check only the time difference

Am collect a time only from the html form thus

$startTime = 13:30:00

$endTime = 14:00:00

How can i find the deference between this time from the html in php.
Thanks

[Bonesnap]

Take a look at the manual for the [man]DateTime[/man] class. It will allow you to create an object based on your time and find the difference when using diff. It's pretty much the best way to deal with dates and times in PHP.