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Calculate Number Of Days Between Two Dates


I have people posting ads and when the ad is posted I have two fields populated at that time:

date_created
date_expired

With the date expired being 7 days after the date created. Both are in this format: 03/12/07

What I am doing is preventing someone from posting more than one ad per 7 days. I'm validating against their email address for that. But I want to display the date that they would be eligible as well as determine if they are eligible to post or not which would require comparing today's date with probably using the now() function against the date_expired in the database. If the today's date is past then no problem. If not, then it would display an error. Code:




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