How Can I Correctly Add Days to a Date Variable in PHP?

Manipulating Dates in PHP: Adding Days to Date Variables

When working with data, manipulating dates is often a common task. In PHP, it is possible to perform various operations on dates, including adding or subtracting days. Let's examine a specific scenario where the goal is to add days to a given MySQL query result.

Scenario:

Consider the following MySQL query that returns a date in the format 2010-09-17. The requirement is to create new variables $Date2 to $Date5, each incremented by 1, 2, and so on, from the original date.

Incorrect Attempt:

One common mistake when adding days to a date in PHP is using the expression strtotime($Date. ' 1 day'). This actually subtracts a day from the given date instead of adding one.

Correct Solution:

The correct approach is to use the plural form of "day" in the expression, as shown below:

$Date = "2010-09-17";
echo date('Y-m-d', strtotime($Date. ' + 1 days'));
echo date('Y-m-d', strtotime($Date. ' + 2 days'));

This will output the desired dates in the format 'Y-m-d':

2010-09-18
2010-09-19

By using the plural form of "days," you can successfully add days to date variables and perform date-related operations effectively in PHP.

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