PHP Date Exercises : Get the first and last day of a month from a specified date

Last update on June 03 2025 12:56:09 (UTC/GMT +8 hours)

8. First and Last Day of Month

Write a PHP script to get the first and last day of a month from a specified date.

Sample Solution:

PHP Code:

<?php
$dt = "2008-02-23"; // Define the date string
echo 'First day : '. date("Y-m-01", strtotime($dt)).' - Last day : '. date("Y-m-t", strtotime($dt));  
?>

Output:

First day : 2008-02-01 - Last day : 2008-02-29

Explanation:

In the exercise above,

$dt = "2008-02-23";: Specifies the date string "2008-02-23".
strtotime($dt): Converts the date string to a Unix timestamp.
date("Y-m-01", strtotime($dt)): Formats the Unix timestamp to display the first day of the month in the format "YYYY-MM-01".
date("Y-m-t", strtotime($dt)): Formats the Unix timestamp to display the last day of the month in the format "YYYY-MM-t", where "t" represents the number of days in the given month.
echo 'First day : '. date("Y-m-01", strtotime($dt)).' - Last day : '. date("Y-m-t", strtotime($dt));: Prints the formatted first and last days of the month.

Flowchart :

For more Practice: Solve these Related Problems:

Write a PHP script to retrieve the first and last day of the month for a given input date using DateTime and modify date formats.
Write a PHP function that calculates the first and last days for any month and outputs them as an associative array.
Write a PHP program to print the first and last days of the current month, then display the same for the next month.
Write a PHP script to create a function that takes a date as input and returns the first Monday and the last Friday of that month.

Go to:

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PHP Code Editor:

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