- <?php 
-   
- // your code goes here 
-   
-   
- $timeDiff = abs($endTimeStamp - $startTimeStamp); 
-   
- $numberDays = $timeDiff/86400;  // 86400 seconds in one day 
-   
- // and you might want to convert to integer 
- $numberDays = intval($numberDays); 
-   
- echo $numberDays; 
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