tr_ucfirst

tr_ucfirst.php

function tr_ucfirst($str)
{
	$f = mb_substr($str, 0,1);
	switch($f)
	{
		case 'i':
			$r = 'İ';
			break;
			
		case 'ç':
			$r = 'Ç';
			break;
			
		case 'ü':
			$r = 'Ü';
			break;
		case 'ş':
			$r = 'Ş';
			break;
		case 'ö':
			$r = 'Ö';
			break;
		case 'ı':
			$r = 'I';
			break;
	}
	if($r)
	{
		return preg_replace('#^'.$f.'#',$r,$str);
	}
	else 
	{
		return ucfirst($str);
	}
}

Bu nasıl;

function tr_ucfirst($string) {
	$from = preg_split('//u', 'abcdefghjklmnopqrstuvwxyzçşöüiı', -1, PREG_SPLIT_NO_EMPTY);
	$to = preg_split('//u', 'ABCDEFGHJKLMNOPQRSTUVWXYZÇŞÖÜİI', -1, PREG_SPLIT_NO_EMPTY);
	return $to[array_search(mb_substr($string, 0, 1), $from)] . mb_substr($string, 1);
}