UTF - Win1251 conversion

gistfile1.txt

function win1251_utf8($s){
  $t='';
	for($i=0, $m=strlen($s); $i<$m; $i++)
	{
		$c=ord($s[$i]);
		if ($c<=127) {$t.=chr($c); continue; }
		if ($c>=192 && $c<=207)    {$t.=chr(208).chr($c-48); continue; }
		if ($c>=208 && $c<=239) {$t.=chr(208).chr($c-48); continue; }
		if ($c>=240 && $c<=255) {$t.=chr(209).chr($c-112); continue; }
		if ($c==184) { $t.=chr(209).chr(209); continue; };
		if ($c==168) { $t.=chr(208).chr(129);  continue; };
	}
	return $t;

}

function utf2win1251($content)
{
	$newcontent = "";

	for ($i = 0; $i < strlen($content); $i++)
	{
		$c1 = substr($content, $i, 1);
		$byte1 = ord($c1);
		if ($byte1>>5 == 6)
		{
			$i++;
			$c2 = substr($content, $i, 1);
			$byte2 = ord($c2);
			$byte1 &= 31;
			$byte2 &= 63;
			$byte2 |= (($byte1 & 3) << 6);
			$byte1 >>= 2;
			$word = ($byte1<<8) + $byte2;

			if ($word == 1025) $newcontent .= chr(168);
			else if ($word == 1105) $newcontent .= chr(184);
			else if ($word >= 0x0410 && $word <= 0x044F) $newcontent .= chr($word-848);
			else
			{
				$a = dechex($byte1);
				$a = str_pad($a, 2, "0", STR_PAD_LEFT);
				$b = dechex($byte2);
				$b = str_pad($b, 2, "0", STR_PAD_LEFT);
				$newcontent .= "".$a.$b.";";
			}
		}
		else
		$newcontent .= $c1;
	}

	return $newcontent;
}