<?php // Create key $key = md5("2019-05-16"); //Validate for($i=0; $i <= 10; $i++){ if($key == md5(date("Y-m-d", strtotime("-" . $i . " days")))){ echo "valid\n"; } } // Create key $key = md5("2019-05-05"); //Validate for($i=0; $i <= 10; $i++){ if($key == md5(date("Y-m-d", strtotime("-" . $i . " days")))){ echo "valid"; } }
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