In this tutorial, we will create a Convert Gregorian Date To Julian Day using PHP. This code will automatically calculate the total Julian day when the user inputted a regular date entry. The system uses the PHP POST method to launch a function that converts the given Gregorian date into Julian days using gregoriantojd() by adding time as an argument. This is a user-friendly kind of program feel free to modify it.
We will be using PHP as a scripting language and interpreter that is used primarily on any web server, including xamp, wamp, etc. It is being used to any popular websites, and it has a modern technology that can easily be used by the next generation.
Getting Started:
First, you have to download & install XAMPP or any local server that runs PHP scripts. Here’s the link for the XAMPP server https://www.apachefriends.org/index.html.
And, this is the link for the bootstrap that I used for the layout design https://getbootstrap.com/.
Creating The Interface
This is where we will create a simple form for our application. To create the forms, copy and write it into your text editor, then save it as index.php.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" name="viewport" content="width=device-width, initial-scale=1" />
<link rel="stylesheet" type="text/css" href="css/bootstrap.css" />
</head>
<body>
<nav class="navbar navbar-default">
<div class="container-fluid">
<a class="navbar-brand" href="https://sourcecodester.com">Sourcecodester</a>
</div>
</nav>
<div class="col-md-3"></div>
<div class="col-md-6 well">
<h3 class="text-primary">PHP - Convert Gregorian Date To Julian Day</h3>
<hr style="border-top:1px dotted #ccc;"/>
<div class="col-md-3"></div>
<div class="col-md-6">
<form method="POST" action="">
<div class="form-group">
<label>Enter a date</label>
<input type="date" name="date" class="form-control" required="required"/>
</div>
<center><button class="btn btn-primary" name="convert">Convert</button></center>
</form>
<?php include'converter.php'?>
</div>
</div>
</body>
</html>Creating the Main Function
This code contains the main function of the application. This code will convert a date into a julian day 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 converter.php
<?php
date_default_timezone_set("Etc/GMT-8");
if(ISSET($_POST['convert'])){
$month=date("n", strtotime($_POST['date']));
$day=date("d", strtotime($_POST['date']));
$year=date("Y", strtotime($_POST['date']));
$julian = gregoriantojd($month, $day, $year);
echo "<center><h2>The Julian Day is <span class='text-success'>".$julian."</span></h2></center>";
}
?>There you have it we successfully created Convert Gregorian Date To Julian Day 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!
