How change timezone from utc in php form mail

When sending emails using PHP's mail() function, the timestamp used in the Date header is typically in UTC (Coordinated Universal Time) format. If you want to change the timezone from UTC to a different timezone, you can use the date_default_timezone_set() function to set the default timezone before sending the email.

Here's an example:

<?php
// Set the default timezone to, for example, America/New_York
date_default_timezone_set('America/New_York');

// Set the email headers
$headers = array(
    'From' => '[email protected]',
    'Date' => date('r'), // This will use the default timezone
);

// Send the email
mail('[email protected]', 'Subject', 'Message', $headers);
?>

In this example, the date_default_timezone_set() function is used to set the default timezone to America/New_York. The date('r') function is then used to generate the Date header, which will use the default timezone.

Alternatively, you can use the gmdate() function to specify the timezone explicitly. For example:

<?php
// Set the email headers
$headers = array(
    'From' => '[email protected]',
    'Date' => gmdate('r', time()), // Use UTC timezone
);

// Send the email
mail('[email protected]', 'Subject', 'Message', $headers);
?>

In this example, the gmdate() function is used to generate the Date header in UTC timezone, using the time() function to get the current timestamp.

Note that the mail() function itself does not care about the timezone, it will send the email with the timestamp in the format specified in the Date header.