PHP Age Calculator Source Code

Web Application: Age Calculator in PHP with source code, demo, and also how you can execute full program easily. To complete the program you need to follow those steps given bellow

Hi coder, previously we tried to COVID-19 Tracker application with PHP. Now its time to calculate age. When I start coding this the one program that I like so much. Lots of PHP programs and calculation parts are coming in an upcoming post so stay with us and don’t forget to bookmark our website.

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PHP Age Calculator Source Code

To complete this program with debugging free code you have to create only one file(index.php) because we use the bootstrap framework to style our CSS. And we also post data on the same page using the PHP function "isset($_POST['submit']))" that only show data ones it’s submitted.

Next, Here we two types of date “Date of Birth” and “Age at the Date of “. When you select both the date and submit for the result then the PHP function will execute and display the result of your selected date of birth. It’s predominantly used DateTime() and date diff() function. DateTime() function used to set date in DateTime format and diff() function used for differentiating between two dates.

Back to coding,

index.php

Create a PHP file named ‘index.php‘ and put those codes given below.

<!-- Coding Debugging (https://codingdebugging.com) -->
<!DOCTYPE html>
<html lang="en">
<head>
    
    <title>Age Calculator - Coding Debugging</title>

    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">

    <!-- Bootstrap CSS -->
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css">

    <!-- Bootstrap JS -->
    <script src="https://code.jquery.com/jquery-3.4.1.slim.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js"></script>
    <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js"></script>

    <!-- Font Awesome -->
    <script src="https://kit.fontawesome.com/996973c893.js" crossorigin="anonymous"></script>

    <!-- Google Fonts -->
    <link href="https://fonts.googleapis.com/css2?family=Baloo+Thambi+2:wght@400;500;600;700;800&display=swap" rel="stylesheet">

    <!-- My Stylesheet -->
    <style type="text/css">
    	body {
		  font-family: "Baloo Thambi 2", cursive;
		}
    </style>

</head>
<body>
    <div class="container-fluid bg-light p-5 text-center my-3">
        <h2 class="">Age Calculator</h1>

        <h5 class="text-muted">CALCULATE YOUR AGE WITH YEARS, MONTHS, DAYS, WEEKS, DAYS, HOURS, MINUTES, SECONDS & SOME INTERESTING FACTS.</h5>
    </div>



    <div class="container bg-light p-3 my-5 text-center">
        <div class="card-body">
            <form action="index.php" method="post" class="form-group">
    			<div class="row" align="left">
    				<div class="col-md-12">
    					<button class="btn btn-dark">Date of Birth</button>
    				</div>
    			</div>
    			<br>

                <div class="row mb-3"> 
                    <div class="col-md-4">
                    <select name="day" class="form-control"> 

                    	<?php
                    	for($i=1;$i<=31;$i++)
                    	{
                    	?>
                    	<option value="<?php echo $i;?>" <?php if($i=='1'){echo "selected";}?>><?php echo $i;?></option>
                    	<?php
                    	}

                    	?>
                      
                    </select>
                    </div>

                    <div class="col-md-4">
                    <select name="month" class="form-control">
                        <?php
                        for($i=1;$i<=12;$i++)
                        {
                        $month = date('F', mktime(0,0,0,$i, 1, date('Y')));
                        ?>
                        <option value="<?php echo $i;?>" <?php if($i=='5'){echo "selected";}?>><?php echo $month;?></option>
                        <?php
                        }
                        ?>
                    </select>
                    </div>

                    <div class="col-md-4">
                    <select name="year" class="form-control">
                    	<?php
                    	$year = date('Y');
                    	for($i=1900;$i<=$year;$i++)
                    	{
                    	?>
                    	<option value="<?php echo $i;?>"<?php if($i=='1997'){echo "selected";}?>><?php echo $i;?></option>
                    	<?php
                    	}
                    	?>
                    </select>
                    </div>
                </div>  


    			<div class="row" align="left">
    				<div class="col-md-12">
    					<button class="btn btn-dark">Age at the Date of</button>
    				</div>
    			</div>
    			<br>

                <div class="row mb-3"> 
                   <div class="col-md-4">
                    <select name="current_day" class="form-control"> 

                        <?php
                		for($i=1;$i<=31;$i++)
                		{
                		?>
                		<option value="<?php echo $i;?>" <?php if($i==date('d')){echo "selected";}?>><?php echo $i;?></option>
                		<?php
                		}

                		?>
                      
                    </select>
                    </div>

                    <div class="col-md-4">
                    <select name="current_month" class="form-control">
                    
                        <?php
                        for($i=1;$i<=12;$i++)
                        {
                        $month = date('F', mktime(0,0,0,$i, 1, date('Y')));
                        ?>
                        <option value="<?php echo $i;?>"<?php if($i==date('m')){echo "selected";}?>><?php echo $month;?></option>
                        <?php
                        }
                        ?>

                    </select>
                    </div>

                    <div class="col-md-4">
                    <select name="current_year" class="form-control">
                		<?php
                		$year = date('Y');
                		for($i=1900;$i<=$year;$i++)
                		{
                		?>
                		<option value="<?php echo $i;?>" <?php if($i==date('Y')){echo "selected";}?>><?php echo $i;?></option>
                		<?php
                		}
                		?>
                    </select>
                    </div>
                </div>  


                <div class="row" align="right">
                    <div class="col-md-12">
                        <input type="submit" name="submit" class="btn btn-primary " value="Calculate Age">
                    </div>
                </div>  
            </form> 
      </div>
      <div class="card-footer" align="left">
        <?php
        if(isset($_POST['submit'])) {

        ?>
        <div class="row" align="left">
            <div class="col-md-12">
            	<button class="btn btn-dark">Result</button>
            </div>
        </div>
        <br>
        <?php

        $hours_in_day   = 24;
        $minutes_in_hour= 60;
        $seconds_in_mins= 60;

        $dob=$_POST['day'].'-'.$_POST['month'].'-'.$_POST['year'];
        $current_dob=$_POST['current_day'].'-'.$_POST['current_month'].'-'.$_POST['current_year'];

        $birth_date     = new DateTime($dob);
        $current_date   = new DateTime($current_dob);

        $diff           = $birth_date->diff($current_date);

        echo $years     = $diff->y . " years " . $diff->m . " months " . $diff->d . " days"; echo "<br/>";
        echo $months    = ($diff->y * 12) + $diff->m . " months " . $diff->d . " days"; echo "<br/>";
        echo $weeks     = floor($diff->days/7) . " weeks " . $diff->d%7 . " days"; echo "<br/>";
        echo $days      = $diff->days . " days"; echo "<br/>";
        echo $hours     = $diff->h + ($diff->days * $hours_in_day) . " hours"; echo "<br/>";
        echo $mins      = $diff->h + ($diff->days * $hours_in_day * $minutes_in_hour) . " minutes"; echo "<br/>";
        echo $seconds   = $diff->h + ($diff->days * $hours_in_day * $minutes_in_hour * $seconds_in_mins) . " seconds"; echo "<br/>";

        ?>
        <br>
        <div class="row" align="left">
        	<div class="col-md-12">
        		<button class="btn btn-dark">Facts</button>
        	</div>
        </div>
        <br>
        <?php

        echo $a = (3 * preg_replace('/[^0-9]/', '', $days)) . " breaths liters of oxygen"; echo "<br/>";
        echo $b = (5 * preg_replace('/[^0-9]/', '', $mins)) . " times heart beaten"; echo "<br/>";
        echo $c = (1 * preg_replace('/[^0-9]/', '', $years)) . " tons of food"; echo "<br/>";
        echo $d = (10 * preg_replace('/[^0-9]/', '', $days)) . " times laughed"; echo "<br/>";
        echo $e = (5 * preg_replace('/[^0-9]/', '', $months)) . " centimeter hairs growth"; echo "<br/>";
        }
        ?>
        </div>
    </div>

    <hr>

    <footer class="footer mt-auto py-3 bg-light">
        <div class="container text-center">
            <span class="text-muted">Copyright &copy;2020 | Age Calculator | <a href="https://codingdebugging.com/" target="_blank">CodingDebugging.Com</a></span>
        </div>
    </footer>
    
</body>
</html>

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<!DOCTYPE html>

<head>

<title>Age Calculator - Coding Debugging</title>

body {

font-family: "Baloo Thambi 2", cursive;

}

</style>

</head>

<body>

<h2 class="">Age Calculator</h1>

<h5 class="text-muted">CALCULATE YOUR AGE WITH YEARS, MONTHS, DAYS, WEEKS, DAYS, HOURS, MINUTES, SECONDS & SOME INTERESTING FACTS.</h5>

</div>

<button class="btn btn-dark">Date of Birth</button>

</div>

<br>

<?php

for($i=1;$i<=31;$i++)

{

<?php

}

</select>

</div>

<?php

for($i=1;$i<=12;$i++)

{

$month = date('F', mktime(0,0,0,$i, 1, date('Y')));

<?php

}

</select>

</div>

<?php

$year = date('Y');

for($i=1900;$i<=$year;$i++)

{

<?php

}

</select>

</div>

</div>

<br>

<?php

for($i=1;$i<=31;$i++)

{

<?php

}

</select>

</div>

<?php

for($i=1;$i<=12;$i++)

{

$month = date('F', mktime(0,0,0,$i, 1, date('Y')));

<?php

}

</select>

</div>

<?php

$year = date('Y');

for($i=1900;$i<=$year;$i++)

{

<?php

}

</select>

</div>

</div>

</form>

</div>

<?php

if(isset($_POST['submit'])) {

<button class="btn btn-dark">Result</button>

</div>

<br>

<?php

$hours_in_day = 24;

$minutes_in_hour= 60;

$seconds_in_mins= 60;

$dob=$_POST['day'].'-'.$_POST['month'].'-'.$_POST['year'];

$current_dob=$_POST['current_day'].'-'.$_POST['current_month'].'-'.$_POST['current_year'];

$birth_date = new DateTime($dob);

$current_date = new DateTime($current_dob);

$diff = $birth_date->diff($current_date);

echo $years = $diff->y . " years " . $diff->m . " months " . $diff->d . " days"; echo "<br/>";

echo $months = ($diff->y * 12) + $diff->m . " months " . $diff->d . " days"; echo "<br/>";

echo $weeks = floor($diff->days/7) . " weeks " . $diff->d%7 . " days"; echo "<br/>";

echo $days = $diff->days . " days"; echo "<br/>";

echo $hours = $diff->h + ($diff->days * $hours_in_day) . " hours"; echo "<br/>";

echo $mins = $diff->h + ($diff->days * $hours_in_day * $minutes_in_hour) . " minutes"; echo "<br/>";

echo $seconds = $diff->h + ($diff->days * $hours_in_day * $minutes_in_hour * $seconds_in_mins) . " seconds"; echo "<br/>";

<br>

<button class="btn btn-dark">Facts</button>

</div>

<br>

<?php

echo $a = (3 * preg_replace('/[^0-9]/', '', $days)) . " breaths liters of oxygen"; echo "<br/>";

echo $b = (5 * preg_replace('/[^0-9]/', '', $mins)) . " times heart beaten"; echo "<br/>";

echo $c = (1 * preg_replace('/[^0-9]/', '', $years)) . " tons of food"; echo "<br/>";

echo $d = (10 * preg_replace('/[^0-9]/', '', $days)) . " times laughed"; echo "<br/>";

echo $e = (5 * preg_replace('/[^0-9]/', '', $months)) . " centimeter hairs growth"; echo "<br/>";

}

</div>

<hr>

</div>

</footer>

</body>

</html>

Thank you for visiting!

We appreciate you for your precious time. I hope you are learn something from here! If you have any queries about this coding comment down below we will reply ASAP.

Keep coding, Keep debugging!

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PHP Age Calculator Source Code | Age Calculator in PHP

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PHP Age Calculator Source Code

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PHP Age Calculator Source Code

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