<?php
/**
* @see https://github.com/laminas/laminas-mail for the canonical source repository
* @copyright https://github.com/laminas/laminas-mail/blob/master/COPYRIGHT.md
* @license https://github.com/laminas/laminas-mail/blob/master/LICENSE.md New BSD License
*/
namespace Laminas\Mail\Header;
/**
* Generic class for Headers with multiple occurs in the same message
*/
class GenericMultiHeader extends GenericHeader implements MultipleHeadersInterface
{
public static function fromString($headerLine)
{
list($fieldName, $fieldValue) = GenericHeader::splitHeaderLine($headerLine);
$fieldValue = HeaderWrap::mimeDecodeValue($fieldValue);
if (strpos($fieldValue, ',')) {
$headers = [];
foreach (explode(',', $fieldValue) as $multiValue) {
$headers[] = new static($fieldName, $multiValue);
}
return $headers;
}
return new static($fieldName, $fieldValue);
}
/**
* Cast multiple header objects to a single string header
*
* @param array $headers
* @throws Exception\InvalidArgumentException
* @return string
*/
public function toStringMultipleHeaders(array $headers)
{
$name = $this->getFieldName();
$values = [$this->getFieldValue(HeaderInterface::FORMAT_ENCODED)];
foreach ($headers as $header) {
if (! $header instanceof static) {
throw new Exception\InvalidArgumentException(
'This method toStringMultipleHeaders was expecting an array of headers of the same type'
);
}
$values[] = $header->getFieldValue(HeaderInterface::FORMAT_ENCODED);
}
return $name . ': ' . implode(',', $values);
}
}