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Revision 1257 Revision 2049
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 *
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 *
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 * An open source application development framework for PHP
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 * An open source application development framework for PHP
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 *
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 *
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 * This content is released under the MIT License (MIT)
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 * This content is released under the MIT License (MIT)
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 *
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 *
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 * Copyright (c) 2014 - 2016, British Columbia Institute of Technology
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 * Copyright (c) 2014 - 2017, British Columbia Institute of Technology
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 *
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
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 * of this software and associated documentation files (the "Software"), to deal
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 * of this software and associated documentation files (the "Software"), to deal
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 * in the Software without restriction, including without limitation the rights
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 * in the Software without restriction, including without limitation the rights
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 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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 * THE SOFTWARE.
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 * THE SOFTWARE.
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 *
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 *
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 * @package	CodeIgniter
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 * @package	CodeIgniter
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 * @author	EllisLab Dev Team
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 * @author	EllisLab Dev Team
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 * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
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 * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
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 * @copyright	Copyright (c) 2014 - 2016, British Columbia Institute of Technology (http://bcit.ca/)
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 * @copyright	Copyright (c) 2014 - 2017, British Columbia Institute of Technology (http://bcit.ca/)
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 * @license	http://opensource.org/licenses/MIT	MIT License
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 * @license	http://opensource.org/licenses/MIT	MIT License
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 * @link	https://codeigniter.com
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 * @link	https://codeigniter.com
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 * @since	Version 1.0.0
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 * @since	Version 1.0.0
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 * @filesource
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 * @filesource
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 */
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 */
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		if (empty($headers) OR empty($header))
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		if (empty($headers) OR empty($header))
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		{
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		{
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			return NULL;
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			return NULL;
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		}
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		}
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		// Count backwards, in order to get the last matching header
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		for ($i = 0, $c = count($headers); $i < $c; $i++)
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		for ($c = count($headers) - 1; $c > -1; $c--)
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		{
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		{
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			if (strncasecmp($header, $headers[$i], $l = self::strlen($header)) === 0)
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			if (strncasecmp($header, $headers[$c], $l = self::strlen($header)) === 0)
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			{
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			{
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				return trim(self::substr($headers[$i], $l+1));
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				return trim(self::substr($headers[$c], $l+1));
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			}
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			}
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		}
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		}
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