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PHP - Get Total Days In A Month

In this tutorial we will create a Get Total Days In A Month using PHP. This code will get the total days in a month when user submit the required information. The code itself use a PHP POST method to initiate a function that get the total days in a month using cal_days_in_month() by setting the required parameter in order to display the result. This is a user-friendly kind of program, feel free to use it and modify it as your own.

We will be using PHP as a scripting language and interpreter that is used primarily on any webserver including xamp, wamp, etc. It is being use to any famous websites and it has a modern technology that can easily be use by the next generation.

Getting Started:

First you have to download & install XAMPP or any local server that run PHP scripts. Here's the link for XAMPP server

And, this is the link for the bootstrap that i used for the layout design

Creating The Interface

This is where we will create a simple form for our application. To create the forms simply copy and write it into your text editor, then save it as index.php.

  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4. <meta charset="UTF-8" name="viewport" content="withd=device-width, initial-scale=1"/>
  5. <link rel="stylesheet" type="text/css" href="css/bootstrap.css"/>
  6. </head>
  7. <body>
  8. <nav class="navbar navbar-default">
  9. <div class="container-fluid">
  10. <a class="navbar-brand" href="">Sourcecodester</a>
  11. </div>
  12. </nav>
  13. <div class="col-md-3"></div>
  14. <div class="col-md-6 well">
  15. <h3 class="text-primary">PHP - Get Total Days In A Month</h3>
  16. <hr style="border-top:1px dotted;"/>
  17. <div class="col-md-4">
  18. <form method="POST" action="">
  19. <div class="form-group">
  20. <label>Month</label>
  21. <select class="form-control" name="month" required="required">
  22. <option value="">Select month</option>
  23. <?php
  24. $months = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'];
  25. for($i = 1; $i<=12; $i++){
  26. echo "<option value='".$i."'>".$months[$i - 1]."</option>";
  27. }
  28. ?>
  29. </select>
  30. </div>
  31. <div class="form-group">
  32. <label>Year</label>
  33. <select class="form-control" name="year" required="required">
  34. <option value="">Select year</option>
  35. <?php
  36. $year = date("Y", strtotime("+8 HOURS"));
  37. for($y = $year; $y>=1965; $y--){
  38. echo "<option value='".$y."'>".$y."</option>";
  39. }
  40. ?>
  41. </select>
  42. </div>
  43. <center><button name="get" class="btn btn-primary">Total Days</button></center>
  44. </form>
  45. </div>
  46. <div class="col-md-8">
  47. <?php include 'get_total_days.php'?>
  48. </div>
  49. </div>
  50. </body>
  51. </html>

Creating the Main Function

This code contains the main function of the application. This code will get the total days in a month when the button is clicked. To make this just copy and write these block of codes below inside the text editor, then save it as get_total_days.php

  1. <?php
  2. if(ISSET($_POST['get'])){
  3. $month = $_POST['month'];
  4. $year = $_POST['year'];
  5. $months = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'];
  6. $calculate = cal_days_in_month(CAL_GREGORIAN,$month,$year);
  7. echo "<center><h2>Total of <span class='text-danger'>".$calculate."</span> days in <span class='text-success'>".$months[$month - 1]." ".$year."</span><h2></center>";
  8. }
  9. ?>

There you have it we successfully created a Get Total Days In A Month using PHP. I hope that this simple tutorial help you to what you are looking for. For more updates and tutorials just kindly visit this site. Enjoy Coding!

Note: Due to the size or complexity of this submission, the author has submitted it as a .zip file to shorten your download time. After downloading it, you will need a program like Winzip to decompress it.

Virus note: All files are scanned once-a-day by for viruses, but new viruses come out every day, so no prevention program can catch 100% of them.


1. Re-scan downloaded files using your personal virus checker before using it.
2. NEVER, EVER run compiled files (.exe's, .ocx's, .dll's etc.)--only run source code.

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