PHP_SMART_HOME_V3/app/class/Utilities.php

<?php
/**
*
*/
class Utilities
{
	function cleanString($text) {
		$utf8 = array(
			'/[áàâãªä]/u'   =>   'a',
			'/[ÁÀÂÃÄ]/u'    =>   'A',
			'/[ÍÌÎÏ]/u'     =>   'I',
			'/[íìîï]/u'     =>   'i',
			'/[ěéèêë]/u'     =>   'e',
			'/[ĚÉÈÊË]/u'     =>   'E',
			'/[óòôõºö]/u'   =>   'o',
			'/[ÓÒÔÕÖ]/u'    =>   'O',
			'/[úùûü]/u'     =>   'u',
			'/[ÚÙÛÜ]/u'     =>   'U',
			'/Š/'     		=>   'S',
			'/š/'     		=>   's',
			'/Č/'     		=>   'C',
			'/č/'     		=>   'c',
			'/ř/'     		=>   'r',
			'/Ř/'     		=>   'R',
			'/Ý/'     		=>   'Y',
			'/ý/'     		=>   'y',
			'/ç/'           =>   'c',
			'/Ç/'           =>   'C',
			'/ñ/'           =>   'n',
			'/Ñ/'           =>   'N',
			'/–/'           =>   '-', // UTF-8 hyphen to "normal" hyphen
			'/[’‘‹›‚]/u'    =>   ' ', // Literally a single quote
			'/[“”«»„]/u'    =>   ' ', // Double quote
			'/ /'           =>   ' ', // nonbreaking space (equiv. to 0x160)
		);
		return preg_replace(array_keys($utf8), array_values($utf8), $text);
	}

	function stringInsert($str,$insertstr,$pos)
	{
		$str = substr($str, 0, $pos) . $insertstr . substr($str, $pos);
		return $str;
	}
}