<?php
function is_utf8($str)
{
	$c=0; $b=0;
	$bits=0;
	$len=strlen($str);
	for($i=0; $i<$len; $i++)
	{
		$c=ord($str[$i]);
		if($c > 128)
		{
			if(($c >= 254)) return false;
			elseif($c >= 252) $bits=6;
			elseif($c >= 248) $bits=5;
			elseif($c >= 240) $bits=4;
			elseif($c >= 224) $bits=3;
			elseif($c >= 192) $bits=2;
			else return false;
			if(($i+$bits) > $len) return false;
			while($bits > 1)
			{
				$i++;
				$b=ord($str[$i]);
				if($b < 128 || $b > 191) return false;
				$bits--;
			}
		}
	}
	return true;
}

function php2js ($var)
{
	if (is_array($var))
	{
		$array = array();
		
		foreach ($var as $a_var)
			$array[] = php2js($a_var);
		
		return str_replace("\"", "'", join(",", $array));
	
	
 	}

	elseif (is_bool($var))
		return ($var ? "true" : "false");

	elseif (is_int($var) || is_integer($var) || is_double($var) || is_float($var))
		return $var;

	elseif (is_string($var))
		return "\"" . addslashes(stripslashes($var)) . "\"";
	
	else
		return false;
}

function sec2hms ($sec, $padHours = false) 
{

    // holds formatted string
    $hms = "";
    
    // there are 3600 seconds in an hour, so if we
    // divide total seconds by 3600 and throw away
    // the remainder, we've got the number of hours
    $hours = intval(intval($sec) / 3600); 

    // add to $hms, with a leading 0 if asked for
    $hms .= ($padHours) 
          ? str_pad($hours, 2, "0", STR_PAD_LEFT). ':'
          : $hours. ':';
     
    // dividing the total seconds by 60 will give us
    // the number of minutes, but we're interested in 
    // minutes past the hour: to get that, we need to 
    // divide by 60 again and keep the remainder
    $minutes = intval(($sec / 60) % 60); 

    // then add to $hms (with a leading 0 if needed)
    $hms .= str_pad($minutes, 2, "0", STR_PAD_LEFT). ':';

    // seconds are simple - just divide the total
    // seconds by 60 and keep the remainder
    $seconds = intval($sec % 60); 

    // add to $hms, again with a leading 0 if needed
    $hms .= str_pad($seconds, 2, "0", STR_PAD_LEFT);

    // done!
    return $hms;
    
}
?>