(PHP Extension) Set the X-Priority Header of an Email

Demonstrates how to set the X-Priority header field of an email.

Chilkat PHP Downloads PHP Extension for Windows, Linux, MacOS, Alpine Linux, Solaris

<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

// The AddHeaderField can be called to add any header field.
// If the header field already exists, AddHeaderField replaces it.
$email = new CkEmail();
$email->AddHeaderField('X-Priority','3 (Normal)');

$email->AddHeaderField('X-Priority','1 (High)');

$email->AddHeaderField('X-Priority','5 (Low)');

// The X-Priority value ranges from 1 to 5, with 1 being 
// high priority, 3 is normal, and 5 is low.
// You may set X-Priority to the number alone:

$email->AddHeaderField('X-Priority','1');

// Including extra text, such as (High), should not 
// affect how the header is interpreted.
$email->AddHeaderField('X-Priority','1 (High)');

?>