I want to create the average age of my members. I already managed to get an array of all the date of births and found an easy way to calculate a birthday. But I don't manage to combine it.
My 'date of birth' - array:
$results = array();
$dob_array = mysqli_query($conn, "SELECT dob_array FROM members");
while($row = mysqli_fetch_assoc($dob_array)){
$results[] = $row;
}
The calculation of the age:
$today = new DateTime();
$birthdate = new DateTime("1991-01-01");
$interval = $today->diff($birthdate);
echo $interval->format('%y years');
Calculation average of my age-array:
$average = array_sum($array) / count($array);