How to get the difference of several days from php

This article mainly introduces php how to obtain the relevant knowledge of a few days, the content is detailed and easy to understand, the operation is simple and fast, has a certain reference value, I believe you will have something to gain after reading this php article on how to get a few days, let's take a look.

Php obtains the difference of several days: 1, convert the date into a timestamp, and then calculate the timestamp into the number of days; 2, use the method in the date-time object to calculate the number of days difference between the two dates, such as "$datetime_start- > diff ($datetime_end)-> days;".

This article operating environment: windows7 system, PHP7.1 version, DELL G3 computer

How does php get a few days off?

The number of days between the two dates of PHP

Find the number of days between the two dates

Plan 1: convert the date into a timestamp, and then calculate the timestamp into days. (not recommended, just know that there is such a thing)

Disadvantages: this method is not safe, ① converts the date to timestamp int by default, int space may not be enough ② timestamp value is too large, it is not very scientific for operation

Optimization and improvement

Option 2: use the method in the date-time object (recommended)

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