如何根据出生日期计算用户的年龄？

Question

I need to calculate ages depended on birthday from a table of customers.

This is my code:

// customer age
function calculate_customer_age($startDate,$endDate){
    $endDate=date(m-d-y);
    $startDate= $customer['birthday'];
    $fromDate= new DateTime($startDate);
    $toDate= new DateTime($endDate);
    echo $fromDate->diff($toDate)->days;
}

In the last row, I need to echo age calculated depended on retrieve from a table of a customer from MySQL.

Answer 1

You can use below code in your function, which will calculate age upto today. You can modify $today to use the end date and format you want.

$dateOfBirth = $customer['birthday'];
$today = date("Y-m-d");
$diff = date_diff(date_create($dateOfBirth), date_create($today));
echo 'Age is '.$diff->format('%y');