format string to get difference

Question

How can I get the difference in number of days or weeks or months or years without using mathematics but by using a single function call in between two particular dates?

Or I have to use mathematics?

Suppose

$interval->format('%a')

Here by using %a as the format string outputs the difference in number of days. So what will be for weeks or months or years? In datetime.format its said that

format

Format accepted by date().

But in date I found no format character as %a.

What a function call like [date_diff](http://www.php.net/manual/en/datetime.diff.php) — Anigel, Aug 02 '13 at 06:05
@vascowhite No answer is there for this question. But this answer can answer that question also. — itsazzad, Aug 04 '13 at 09:08

score 1 · Accepted Answer · answered Aug 02 '13 at 06:29

1

I have got the solution in dateinterval.format() but for weeks I have to use mathematics may be.

answered Aug 02 '13 at 06:29

itsazzad

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math is good for brain! – Majid Aug 02 '13 at 06:35
programming is all maths! – Toby Allen Aug 02 '13 at 06:40
Yes I know about math. But I do not want to practice the same math again and again. Thats why I want already existing math. – itsazzad Aug 02 '13 at 16:14

format string to get difference

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