[Zorono]

Hello everybody, so iam going to show you how to calculate your Age with full detailes (Y/M/H/m/s/ms/ns/ms) in PHP by Date of Birth.

If you Wanna Calculate your real Age in numeric format:
You Have to subtract date('year') from date('Y') and insert on the last date function's timestamp argument strtotime('Year-Month-Day')

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To Be: date("Y") - date("Y", strtotime('Year-Month-Day'))
For Example: date("Y") - date("Y", strtotime('2002-09-16'))) 


Output:

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16

If you Wanna Calculate your real age with full details (Y/M/H/m/s/ms/ns/ms):
1- We initializate the $datebirth var with the DateTime Class and set the timestamp argument of the DateTime Class to your Date of Birth with the following Syntax Year-Month-Day

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To Be: $datebirth = new DateTime('Year-Month-Day');
For Example: $datebirth = new DateTime('2002-09-16'); 


2- We initializate the $today var with the DateTime Class without setting any arguments to get Today's Timestamp

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To Be: $today = new DateTime; 


3- We do the algorithm to calculate the requested Person's Age with DateTime::diff and then to get the result we must use DateInterval::Format

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For Example: echo $today->diff($dabi)->format('%y Years, %m Months, %d Days, %h Hours, %I Minutes, %s Seconds, ' . ($today->diff($dabi)->format('%s')*1000) . ' Milliseconds, ' . ($today->diff($dabi)->format('%s')*1000*1000000) . ' Nanoseconds, ' . ($today->diff($dabi)->format('%s')*1000*1000000*1000) . ' Microseconds'); 


Let's Discuss somethings in our small algorithm...

• We multiply the seconds in one thousand to get the Milliseconds.(Second = 1000 Milliseconds)
  
• We multiply the milliseconds in one thousand ms and the result get multiplied in one million ms to get the Nanosecond.(Nanosecond = 1000000 Millisecond)
  
• We multiply the Microseconds in one thousand ms and the result get multiplied in one million ms and the second result get multiplied in one thousand, to get the Microsecond.(Microsecond = 1000 Nanosecond)
  

Output:

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15 Years, 8 Months, 3 Days, 19 Hours, 25 Minutes, 45 Seconds, 45000 Milliseconds, 45000000000 Nanoseconds, 45000000000000 Microseconds

Download Full Example Code: https://gist.github.com/JohnMagdy/8f8411...31cb9ec602