What does this function do?

I did not understand this function properly. What does it do?

Thanks all.

function addWrap($curChar,$nextChar,$maxChars,&$finalText,&$tempText,&$curCount,&$tempCount) {
	$wrapProhibitedChars = "([{!;,\\/:?}])";

	if ($curChar == ' ' || $curChar == "\n")
	{
		$finalText .= $tempText . $curChar;
		$tempText = '';
		$curCount = 0;
		$curChar = '';
	}
	elseif ($curCount >= $maxChars)
	{
		$finalText .= $tempText . ' ';
		$tempText = '';
		$curCount = 1;
	}
	else
	{
		$tempText .= $curChar;
		$curCount++;
	}

	// the following code takes care of (unicode) characters prohibiting non-mandatory breaks directly before them.

	// $curChar isn't a " " or "\n"
	if ($tempText != '' && $curChar != '')
	{
		$tempCount++;
	}
	// $curChar is " " or "\n", but $nextChar prohibits wrapping.
	elseif ( ($curCount == 1 && strstr($wrapProhibitedChars,$curChar) !== false) || 
	         ($curCount == 0 && $nextChar != '' && $nextChar != ' ' && $nextChar != "\n" && strstr($wrapProhibitedChars,$nextChar) !== false))
	{
		$tempCount++;
	}
	// $curChar and $nextChar aren't both either " " or "\n"
	elseif (!($curCount == 0 && ($nextChar == ' ' || $nextChar == "\n")))
	{
		$tempCount = 0;
	}

	if ($tempCount >= $maxChars && $tempText == '')
	{
		$finalText .= ' ';
		$tempCount = 1;
		$curCount = 2;
	}

	if ($tempText == ''  && $curCount > 0)
	{
		$finalText .= $curChar;
	}
}

PHP:

 

Wrap texts when words are to long... want to know more?

 

How long does text has to be before it wraps it?

thanks