vendor/zendframework/zend-mail/src/Header/GenericMultiHeader.php

   1 <?php
   2 /**
   3  * @see       https://github.com/zendframework/zend-mail for the canonical source repository
   4  * @copyright Copyright (c) 2005-2018 Zend Technologies USA Inc. (https://www.zend.com)
   5  * @license   https://github.com/zendframework/zend-mail/blob/master/LICENSE.md New BSD License
   6  */
   7
   8 namespace Zend\Mail\Header;
   9
  10 /**
  11  * Generic class for Headers with multiple occurs in the same message
  12  */
  13 class GenericMultiHeader extends GenericHeader implements MultipleHeadersInterface
  14 {
  15     public static function fromString($headerLine)
  16     {
  17         list($fieldName, $fieldValue) = GenericHeader::splitHeaderLine($headerLine);
  18         $fieldValue = HeaderWrap::mimeDecodeValue($fieldValue);
  19
  20         if (strpos($fieldValue, ',')) {
  21             $headers = [];
  22             foreach (explode(',', $fieldValue) as $multiValue) {
  23                 $headers[] = new static($fieldName, $multiValue);
  24             }
  25             return $headers;
  26         }
  27
  28         return new static($fieldName, $fieldValue);
  29     }
  30
  31     /**
  32      * Cast multiple header objects to a single string header
  33      *
  34      * @param  array $headers
  35      * @throws Exception\InvalidArgumentException
  36      * @return string
  37      */
  38     public function toStringMultipleHeaders(array $headers)
  39     {
  40         $name   = $this->getFieldName();
  41         $values = [$this->getFieldValue(HeaderInterface::FORMAT_ENCODED)];
  42
  43         foreach ($headers as $header) {
  44             if (! $header instanceof static) {
  45                 throw new Exception\InvalidArgumentException(
  46                     'This method toStringMultipleHeaders was expecting an array of headers of the same type'
  47                 );
  48             }
  49             $values[] = $header->getFieldValue(HeaderInterface::FORMAT_ENCODED);
  50         }
  51
  52         return $name . ': ' . implode(',', $values);
  53     }
  54 }