Create smaller image and thumbnail from file upload field in RSForm!Pro

createthumbs

function resizeImage($CurWidth,$CurHeight,$MaxSize,$DestFolder,$SrcImage,$Quality,$ImageType){
	if($CurWidth <= 0 || $CurHeight <= 0){
		return false;
	}
	$ImageScale = min($MaxSize/$CurWidth, $MaxSize/$CurHeight);
	$NewWidth = ceil($ImageScale*$CurWidth);
	$NewHeight = ceil($ImageScale*$CurHeight);
	$NewCanves = imagecreatetruecolor($NewWidth, $NewHeight);
	if(imagecopyresampled($NewCanves, $SrcImage,0, 0, 0, 0, $NewWidth, $NewHeight, $CurWidth, $CurHeight)){
		switch(strtolower($ImageType)){
			case 'image/png':
				imagepng($NewCanves,$DestFolder);
				break;
			case 'image/gif':
				imagegif($NewCanves,$DestFolder);
				break;         
			case 'image/jpeg':
			case 'image/pjpeg':
				imagejpeg($NewCanves,$DestFolder,$Quality);
				break;
			default:
				return false;
		}
		if(is_resource($NewCanves)) {imagedestroy($NewCanves);}
		return true;
	}
}
function cropImage($CurWidth,$CurHeight,$iSize,$DestFolder,$SrcImage,$Quality,$ImageType){    
	if($CurWidth <= 0 || $CurHeight <= 0){
		return false;
	}
	if($CurWidth>$CurHeight){
		$y_offset = 0;
		$x_offset = ($CurWidth - $CurHeight) / 2;
		$square_size= $CurWidth - ($x_offset * 2);
	}else{
		$x_offset = 0;
		$y_offset = ($CurHeight - $CurWidth) / 2;
		$square_size = $CurHeight - ($y_offset * 2);
	}
	$NewCanves = imagecreatetruecolor($iSize, $iSize);
	if(imagecopyresampled($NewCanves, $SrcImage,0, 0, $x_offset, $y_offset, $iSize, $iSize, $square_size, $square_size)){
		switch(strtolower($ImageType)){
			case 'image/png':
				imagepng($NewCanves,$DestFolder);
				break;
			case 'image/gif':
				imagegif($NewCanves,$DestFolder);
				break;         
			case 'image/jpeg':
			case 'image/pjpeg':
				imagejpeg($NewCanves,$DestFolder,$Quality);
				break;
			default:
				return false;
		}
	if(is_resource($NewCanves)) {imagedestroy($NewCanves);}
	return true;
	}     
}
function sanitize_file_name($string) {
	$clean = preg_replace("/[^a-zA-Z0-9\._-]/", "_", $string);
	return strtolower($clean);
}
function createCode($length) {
	$chars = "1234567890abcdefghijkmnopqrstuvwxyz";
	$i = 0;
	$code = "";
	while ($i <= $length) {$code .= $chars{mt_rand(0,strlen($chars))};$i++;}
	return $code;
}
if($_FILES['form']['name']['photo'] != '') {
	$ThumbImageSize = 80;
	$BigImageMaxSize = 400;
	$ThumbPrefix = "thumb-";
	$DestinationDirectory = JPATH_BASE.'/images/yourphotos/';
	$Quality = 90;
	$code = createCode(10);
	$ImageName = sanitize_file_name($_FILES['form']['name']['photo']);
	$ImageSize = $_FILES['form']['size']['photo'];
	$TempSrc = $_FILES['form']['tmp_name']['photo'];
	$ImageType = $_FILES['form']['type']['photo'];
	switch(strtolower($ImageType))
	{
		case 'image/png':
			$CreatedImage =  imagecreatefrompng($_FILES['form']['tmp_name']['photo']);
			break;
		case 'image/gif':
			$CreatedImage =  imagecreatefromgif($_FILES['form']['tmp_name']['photo']);
			break;         
		case 'image/jpeg':
		case 'image/pjpeg':
			$CreatedImage = imagecreatefromjpeg($_FILES['form']['tmp_name']['photo']);
			break;
		default:
			die('Filetype not allowed!');
	}
	list($CurWidth,$CurHeight)=getimagesize($TempSrc);
	$ImageExt = substr($ImageName, strrpos($ImageName, '.'));
	$ImageExt = str_replace('.','',$ImageExt);
	$ImageName = preg_replace("/\\.[^.\\s]{3,4}$/", "", $ImageName);
	$NewImageName = $ImageName.'-'.$code.'.'.$ImageExt;
	$thumb_DestRandImageName = $DestinationDirectory.$ThumbPrefix.$NewImageName;
	$DestRandImageName = $DestinationDirectory.$NewImageName;
	if(resizeImage($CurWidth,$CurHeight,$BigImageMaxSize,$DestRandImageName,$CreatedImage,$Quality,$ImageType)){
		if(!resizeImage($CurWidth,$CurHeight,$ThumbImageSize,$thumb_DestRandImageName,$CreatedImage,$Quality,$ImageType)){
			echo 'Error Creating thumbnail';
		}
	}else{
		die('Resize Error');
	}
}