Understanding Working Days Calculation using php

Table of contents

No heading

No headings in the article.

In this blog post, we will explore how to calculate working days and find the next working day using PHP. Working with dates and handling business days can be essential in various applications, such as project management, scheduling, and more. We'll provide a step-by-step explanation and practical code examples.

Calculating Working Days: When calculating working days, it's important to exclude weekends (typically Saturday and Sunday) and consider holidays if necessary. The code provided uses PHP to calculate working days, accounting for weekends.

Practical Example: Let's consider a practical example where we start with a given date and add 15 working days to it. We'll also find the next working day after the start date.

//PHP code to calculate and display dates:
$working_days = 15;


$start_date = date("Y-m-d H:i:s", strtotime("+1 second"));

$next_day = strtotime("+1 day", strtotime($start_date));
$next_day_weekday = date("N", $next_day);

if ($next_day_weekday >= 6) {
    do {
        $next_day = strtotime("+1 day", $next_day);
        $next_day_weekday = date("N", $next_day);
    } while ($next_day_weekday >= 6);

$new_date = $start_date;
$working_days_to_add = $working_days;

$current_date = strtotime($new_date);

while ($working_days_to_add > 0) {
    $current_date = strtotime("+1 day", $current_date);
    $dayOfWeek = date("N", $current_date);

    if ($dayOfWeek >= 1 && $dayOfWeek <= 5) {

$new_date = date("Y-m-d H:i:s", $current_date);

echo "Original start date: " . $start_date . "\n";
echo "New date after adding 15 working days: " . $new_date . "\n";
echo "Next working day after the start date: " . date("Y-m-d H:i:s", $next_day) . "\n";

Conclusion: In this blog post, we've demonstrated how to calculate working days and find the next working day using PHP. This knowledge can be valuable for various applications that involve date calculations within a business context. By excluding weekends and considering holidays, you can accurately determine working days for scheduling and planning tasks.