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<?php
/**
* Slim Framework (https://slimframework.com)
*
* @license https://github.com/slimphp/Slim-Psr7/blob/master/LICENSE.md (MIT License)
*/
declare(strict_types=1);
namespace Slim\Psr7\Interfaces;
use InvalidArgumentException;
interface HeadersInterface
{
/**
* Add header value
*
* This method appends the value to the existing array of values
*
* @param string $name
* @param array|string $value
*
* @return HeadersInterface
*
* @throws InvalidArgumentException
*/
public function addHeader($name, $value): HeadersInterface;
/**
* Remove header value
*
* @param string $name
* @return HeadersInterface
*/
public function removeHeader(string $name): HeadersInterface;
/**
* Get header value or values.
* If the array has a single value it will return that single value.
* If the array has multiple values, it will return an array of values.
*
* @param string $name
* @param string[] $default
*
* @return array
*/
public function getHeader(string $name, $default = []): array;
/**
* Replaces the existing header value with the new value.
*
* @param string $name
* @param array|string $value
*
* @return HeadersInterface
*
* @throws InvalidArgumentException
*/
public function setHeader($name, $value): HeadersInterface;
/**
* Replaces all existing headers with the new values.
*
* @param array $headers
*
* @return HeadersInterface
*
* @throws InvalidArgumentException
*/
public function setHeaders(array $headers): HeadersInterface;
/**
* Is the header present in the stack.
*
* @param string $name
* @return bool
*/
public function hasHeader(string $name): bool;
/**
* Return all headers in the stack.
*
* @param bool $originalCase
*
* @return array
*/
public function getHeaders(bool $originalCase): array;
}
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