PHP

Get a Header Field by Name

Demonstrates the Chilkat Email.GetHeaderField method, which returns the value of a header field by name. Header-field names are case-insensitive, so X-Priority and x-priority refer to the same field. This example reads several headers by name.

Background: Looking up a header by name is the quickest way to read a known field like Subject or a custom X- header. One caveat: some header names (such as Received) can legitimately appear more than once. When a field may repeat and you need every occurrence, enumerate by index with GetHeaderFieldName and GetHeaderFieldValue instead of looking up by name.

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Chilkat2 PHP

<?php

use Chilkat2\Email;

// Demonstrates the GetHeaderField method, which returns the value of a header field by
// name.  Header-field names are case-insensitive.

$email = new Email();
$email->Subject = 'Quarterly report';
$email->From = 'alice@example.com';
$email->AddHeaderField('X-Priority', '1');

// Get header field values by name.
echo 'Subject = ', $email->GetHeaderField('Subject'), "\n";
echo 'From = ', $email->GetHeaderField('From'), "\n";
echo 'X-Priority = ', $email->GetHeaderField('x-priority'), "\n";