Question

This is how I started making a birthday system to say how old you are, like on Facebook. So now I’m doing it in Danish 11-1-1993. This is the first day and after months and here after years of when to come into the world or what to say.

Here I show you some code on how I chose to do it, but the problem is such that it does not bother to show up in some way it’s just empty.

<li>Alder: <?php echo $alder_d;?>/<?php echo $alder_m;?>-<?php echo $alder_aar;?> - 
                            <?php
                            $alle_alder = $alder_d . $alder_m . $alder_aar;
                            function age_from_dob($alle_alder) {
                                return floor((time() - strtotime($alle_alder)) / 31556926);
                            }
                            ?>
                            </li>

Asks if you want to know more

It’s down here in function as I’d like it to find out how old you are.

Answer 1

If you want to calculate years you can just

$datetime1 = new DateTime("now");
$datetime2 =  DateTime::createFromFormat("m-d-Y", "11-1-1993");
$interval = $datetime1->diff($datetime2);
echo $interval->format('%y Years');

Output

18 Years