Convert all diacritics in a string to a string without diacritics

replaceDiacritics.php

function replaceDiacritics($str) {
	return preg_replace(
		array(
			/* Lowercase */
			'/[\x{0105}\x{00E0}\x{00E1}\x{00E2}\x{00E3}\x{00E4}\x{00E5}]/u',
			'/[\x{00E7}\x{010D}\x{0107}]/u',
			'/[\x{010F}]/u',
			'/[\x{00E8}\x{00E9}\x{00EA}\x{00EB}\x{011B}\x{0119}]/u',
			'/[\x{00EC}\x{00ED}\x{00EE}\x{00EF}]/u',
			'/[\x{0142}\x{013E}\x{013A}]/u',
			'/[\x{00F1}\x{0148}]/u',
			'/[\x{00F2}\x{00F3}\x{00F4}\x{00F5}\x{00F6}\x{00F8}]/u',
			'/[\x{0159}\x{0155}]/u',
			'/[\x{015B}\x{0161}]/u',
			'/[\x{00DF}]/u',
			'/[\x{0165}]/u',
			'/[\x{00F9}\x{00FA}\x{00FB}\x{00FC}\x{016F}]/u',
			'/[\x{00FD}\x{00FF}]/u',
			'/[\x{017C}\x{017A}\x{017E}]/u',
			'/[\x{00E6}]/u',
			'/[\x{0153}]/u',

			/* Uppercase */
			'/[\x{0104}\x{00C0}\x{00C1}\x{00C2}\x{00C3}\x{00C4}\x{00C5}]/u',
			'/[\x{00C7}\x{010C}\x{0106}]/u',
			'/[\x{010E}]/u',
			'/[\x{00C8}\x{00C9}\x{00CA}\x{00CB}\x{011A}\x{0118}]/u',
			'/[\x{0141}\x{013D}\x{0139}]/u',
			'/[\x{00D1}\x{0147}]/u',
			'/[\x{00D3}]/u',
			'/[\x{0158}\x{0154}]/u',
			'/[\x{015A}\x{0160}]/u',
			'/[\x{0164}]/u',
			'/[\x{00D9}\x{00DA}\x{00DB}\x{00DC}\x{016E}]/u',
			'/[\x{017B}\x{0179}\x{017D}]/u',
			'/[\x{00C6}]/u',
			'/[\x{0152}]/u',
		),
		array(
			'a', 'c', 'd', 'e', 'i', 'l', 'n', 'o', 'r', 's', 'ss', 't', 'u', 'y', 'z', 'ae', 'oe',
			'A', 'C', 'D', 'E', 'L', 'N', 'O', 'R', 'S', 'T', 'U', 'Z', 'AE', 'OE'
		),
		$str);
}