function swiftmailer_is_id_header in Swift Mailer 7

Checks whether a header is an id header.

It is difficult to distinguish id, mailbox and path headers from each other as they all may very well contain the exact same value. This function simply checks whether the header key equals to 'Message-ID' to determine if the header is a path header.

Parameters

string $key: The header key.

string $value: The header value.

Return value

boolean TRUE if the provided header is an id header, and otherwise FALSE.

See also

http://swift_mailer.org/docs/header-id

1 call to swiftmailer_is_id_header()

swiftmailer_get_headertype in includes/helpers/conversion.inc

Determines the header type based on the a header key and value.

File

includes/helpers/conversion.inc, line 255

This file contains conversion functions.

Code

function swiftmailer_is_id_header($key, $value) {
  if (valid_email_address($value) && $key == 'Message-ID') {
    return TRUE;
  }
  else {
    return FALSE;
  }
}