Does anyone know...

Does anyone know what the highlighted 80 means in the code below:

$name = $_FILES[$fieldname]['name'];
	$temp_name = $_FILES[$fieldname]['tmp_name'];
	$newwidth = 400;
	// make a unique filename for the uploaded file and check it is not taken, try again if so 
	$now = time(); //current time stamp
	$path_parts = pathinfo($_FILES[$fieldname]['name']);
	$uploadFilename = $uploadsDirectory . $now . "." . $path_parts["extension"];
	
	$size = getimagesize($temp_name);
	 
	if(preg_match("~\.jpg$~", strtolower($name)))  
		$img = imagecreatefromjpeg($temp_name);
	        
	$round =     round( $size[1] / ($size[0]/$newwidth));
	$trumb = imagecreatetruecolor($newwidth, $round);    
	imagecopyresampled($trumb, $img, 0, 0, 0, 0, $newwidth,$round, $size[0],$size[1]);
	imagejpeg($trumb, $uploadFilename, 80); //what does this 80 mean
	imagedestroy($trumb);

PHP:

thanks in advance

 

check http://www.php.net/imagejpeg

quality

quality is optional, and ranges from 0 (worst quality, smaller file) to 100 (best quality, biggest file). The default is the default IJG quality value (about 75).

 

ok cool, thanks