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time - PHP returns different week number then system

问题描述:

I came across problem in PHP script that returns week number one higher then system does. In both situations timezone is set to "Europe/Prague".

I've done some tests. Both tests were performed on Debian 8.2 with PHP 5.6.14-0+deb8u1.

date +%W

result was: 43

echo date("W");

result was: 44

网友答案:
date +%W

Returns the week number from a zero index. (0-53)

echo date("W");

Returns the week number from a one index. (1-54)

This means that you'll always need to add one to the linux week or remove one from the php week to compare the two.

网友答案:

Linux starts counting from week 0 as the first week.

PHP starts counting from week 1.

Thats why the linux-result is one less than the actual week we have now.

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