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<?php
/**
* Case-insensitive dictionary, suitable for HTTP headers
*
* @package Requests
*/
/**
* Case-insensitive dictionary, suitable for HTTP headers
*
* @package Requests
*/
class Requests_Response_Headers extends Requests_Utility_CaseInsensitiveDictionary {
/**
* Get the given header
*
* Unlike {@see self::getValues()}, this returns a string. If there are
* multiple values, it concatenates them with a comma as per RFC2616.
*
* Avoid using this where commas may be used unquoted in values, such as
* Set-Cookie headers.
*
* @param string $key
* @return string Header value
*/
public function offsetGet($key) {
$key = strtolower($key);
if (!isset($this->data[$key])) {
return null;
}
return $this->flatten($this->data[$key]);
}
/**
* Set the given item
*
* @throws Requests_Exception On attempting to use dictionary as list (`invalidset`)
*
* @param string $key Item name
* @param string $value Item value
*/
public function offsetSet($key, $value) {
if ($key === null) {
throw new Requests_Exception('Object is a dictionary, not a list', 'invalidset');
}
$key = strtolower($key);
if (!isset($this->data[$key])) {
$this->data[$key] = array();
}
$this->data[$key][] = $value;
}
/**
* Get all values for a given header
*
* @param string $key
* @return array Header values
*/
public function getValues($key) {
$key = strtolower($key);
if (!isset($this->data[$key])) {
return null;
}
return $this->data[$key];
}
/**
* Flattens a value into a string
*
* Converts an array into a string by imploding values with a comma, as per
* RFC2616's rules for folding headers.
*
* @param string|array $value Value to flatten
* @return string Flattened value
*/
public function flatten($value) {
if (is_array($value)) {
$value = implode(',', $value);
}
return $value;
}
/**
* Get an iterator for the data
*
* Converts the internal
* @return ArrayIterator
*/
public function getIterator() {
return new Requests_Utility_FilteredIterator($this->data, array($this, 'flatten'));
}
}
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