Update once a day, and retrieve different categories in a cycle of three days. please advise

Update once a day and retrieve different categories in a cycle of three days. please advise me to edit the import rules at the end of this post by AspDelphi from 2013-07-1811: 34: 01: the following 10 sets of images with the highest clicks in China and Japan are retrieved in a cycle every three days. the categories are updated every day: & nbsp; Fashion & nbsp; luxury & nbsp; character & nbsp; life & updated every day. different categories can be retrieved in three days for one cycle. please advise

This post was last edited by AspDelphi at 11:34:01

Import rules: the following 10 sets of datasets with the highest clicks in China and Japan are retrieved in a cycle every three days and updated every day.
Retrieval Category:
Street shot for fashion luxury character life
Beauty and wedding star Test Gallery

Cosmetic trial Brand
Shopping Guide
Gallery below

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------ Solution --------------------
That is to say, your program has been okay, but when it exceeds 42 days, there will be a problem, right?

Then you
$ Days = floor ($ e-$ s)/(24*60*60); // get the number of days from today until the first time my program was executed
$ Key = floor ($ days/3); // when the value of $ key exceeds 42 days, it is incorrect.
Add one
$ Days = fmod ($ days, count ($ arr) * 3 );

$ Days = floor ($ e-$ s)/(24*60*60); // get the number of days from today until the first time my program was executed
$ Days = fmod ($ days, count ($ arr) * 3); // $ days is always less than the number of days in a loop.
$ Key = floor ($ days/3); // when the value of $ key exceeds 42 days, it is incorrect.