A Guide to Technology

Calculation of difference between 2 dates is not an easy task so I m writing a function which do this job easily. This function is useful for calculate age of person by DOB (date of birth) or calculating age of record in databse
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A Problem occurred when I was writing a script for shortUrl redirection. That using 5 Digit decimal numbers can cover only 10⁵=100000 Urls but 5 digit alphanumeric (case sensitive) numbers are able to cover 62²=916132832. So it is very helpful to keep Urls short.

Example

• Using Decimal http://surl.bz/0 to http://surl.bz/99999 only 100000 Urls In 5 Digit
• Using alphanumeric http://surl.bz/0 to http://surl.bz/ZZZZZ 916132832 Urls that’s Great choice

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