check time conflict

[jimmyme]

Hi.. please help.

i googled about this and can't find a script.

is there a php function that checks a time if it conflicted with other time?

like how would I know if 3PM-4PM is inside 1PM-4PM?

Is there a function for this?

Thanks.

[phparion]

Welcome to WebmasterWorld

I am not quite sure about your question, however to subtract / find time differences between two intervals you can always use strtotime() [php.net] and mktime() [php.net] functions. Do read the user comments for each function. you will find ready made solutions / functions for your requirements.

[coopster]

In PHP you would have to compare the start time and end time or duration of the first time period with the same values of the second time period. On the other hand, if you are running a database server that supports standard SQL, there is an OVERLAPS predicate that you could use to run a quick query to verify true or false.