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Hey guys!

I have the following script... Resize works... Scaleup works... but watermark, black and white doesnt work or sepia...

Can anyone see why? Or help?

Thanks Dan

<?php
header ("Content-type: image/jpeg");
ini_set("memory_limit","80M");
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
REQUIRES PARAMS:
path - path to file from domain root
w - sets width to specified value
h - sets height to specified value
scaleup - true or false

Custom Values
wm = Watermark the image
bw = black and white
sep = sepia
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/

$file = $_GET['file'];
$scaleup = $_GET['scaleup'];
$w = $_GET['w'];
$h = $_GET['h'];

$wm = $_GET['wm'];
$bw = $_GET['bw'];
$sep = $_GET['sep'];


// Set some variables that may have not been set
if($_GET['q'] == NULL){
	$qal = "80";
}else{
	$qal = $_GET['q'];
}

$watermark_loc = "proof.gif";
$watermark_opac = "40";





if (!isset ($scaleup)) {$scaleup = 'false';};

if (strlen($h) == 0){unset($h);};
if (strlen($w) == 0){unset($w);};
	

$file = $file;

$patharray = explode("/", $file);

$filename = $patharray[count($patharray)-1];
$path =  str_replace($filename, "", $file);
$extension = substr($filename,-4);
$filenamenoext = str_replace($extension, "", $filename);

$filestring = "";
if (isset ($w)) {
$filestring = $filestring.".w.".$w;
}
if (isset ($h)) {
$filestring = $filestring.".h.".$h;
}
if (isset ($wm)) {
$filestring = $filestring.".wm";
}
if (isset ($bw)) {
$filestring = $filestring.".baw";
}
if (isset ($sep)) {
$filestring = $filestring.".sepia";
}
if ($scaleup == 'true') {
$filestring = $filestring.".scaleup";
}

$filestring = $path.$filenamenoext.$filestring.$extension;


if(file_exists($filestring)){
//it exists - serve up the file.......
readfile ($filestring);
} else {
//it doesn't exist - create the file.......
// get image size of img
$x = getimagesize($file);
// image width
$origw = $x[0];
// image height
$origh = $x[1];


if (isset ($w) AND !isset ($h)) {
// autocompute height if only width is set
$factor = (100 / ($origw / $w)) * .01;
$newh = round ($origh * $factor);
$neww = $w;
} elseif (isset ($h) AND !isset ($w)) {
// autocompute width if only height is set
$factor = (100 / ($origh / $h)) * .01;
$neww = round ($origw * $factor);
$newh = $h;
} elseif (isset ($h) AND isset ($w)) {
// get the smaller resulting image dimension if both height and width are set
		$hx = (100 / ($origw / $w)) * .01;
		$hx = round ($origh * $hx);

		$wx = (100 / ($origh / $h)) * .01;
		$wx = round ($origw * $wx);

		if ($hx < $h) {
$factor = (100 / ($origw / $w)) * .01;
$newh = round ($origh * $factor);
$neww = $w;
		} else {
$factor = (100 / ($origh / $h)) * .01;
$neww = round ($origw * $factor);
$newh = $h;
		}
	}
	
	
if ($scaleup == 'true'){
	//do nothing
}else{
	//check if original is smaller
	if (($neww > $origw) OR (($newh > $origh))){
		$newh = $origh;
		$neww = $origw;
	}
}


$im = imagecreatefromjpeg ($file) or // Read JPEG Image
$im = imagecreatefrompng ($file) or // or PNG Image
$im = imagecreatefromgif ($file) or // or GIF Image
$im = false; // If image is not JPEG, PNG, or GIF


if (!$im) {
	// We get errors from PHP's ImageCreate functions...
	// So let's echo back the contents of the actual image.
	readfile ($file);
} else {
	
	// Do watermark
	if($wm != NULL){
	$watermark = @imagecreatefromgif($watermark_loc);
	$imagewidth = $neww; 
	$imageheight = $newh;  
	$watermarkwidth =  imagesx($watermark); 
	$watermarkheight =  imagesy($watermark); 
	$startwidth = (($imagewidth - $watermarkwidth)/2); 
	$startheight = (($imageheight - $watermarkheight)/2); 
	imagecopymerge($im, $watermark,  $startwidth, $startheight, 0, 0, $watermarkwidth, $watermarkheight, $watermark_opac); 
	}
	
	// Do Black and white
	if($bw != NULL){
		imagefilter($im, IMG_FILTER_GRAYSCALE);
	}
	// Do Sepia
	if($sep != NULL){
		//imagefilter($image, IMG_FILTER_GRAYSCALE);
		//imagefilter($image, IMG_FILTER_COLORIZE, 94,38, 18);
		imagefilter($im,IMG_FILTER_GRAYSCALE);
		imagefilter($im,IMG_FILTER_COLORIZE,100,50,0);
	}
	
	// Create the resized image destination
	$thumb = imagecreatetruecolor ($neww, $newh);
	// Copy from image source, resize it, and paste to image destination
	imagecopyresampled ($thumb, $im, 0, 0, 0, 0, $neww, $newh, $origw, $origh);
	// save resized image
	if ($extension == ".jpg" || $extension == ".JPG"){

	imagejpeg ($thumb, $filestring, $qal);
	} elseif ($extension == ".png" || $extension == ".PNG") {
	imagepng ($thumb, $filestring, $qal);
	} elseif ($extension == ".gif" || $extension == ".GIF") {
	imagegif ($thumb, $filestring, $qal);
	}
	
	imagedestroy($im);
	// output resized image
readfile ($filestring);	
}

}
?>

-----

I think this is the code causing the problems...

// Do watermark
	if($wm != NULL){
	$watermark = @imagecreatefromgif($watermark_loc);
	$imagewidth = $neww; 
	$imageheight = $newh;  
	$watermarkwidth =  imagesx($watermark); 
	$watermarkheight =  imagesy($watermark); 
	$startwidth = (($imagewidth - $watermarkwidth)/2); 
	$startheight = (($imageheight - $watermarkheight)/2); 
	imagecopymerge($im, $watermark,  $startwidth, $startheight, 0, 0, $watermarkwidth, $watermarkheight, $watermark_opac); 
	}
	
	// Do Black and white
	if($bw != NULL){
		imagefilter($im, IMG_FILTER_GRAYSCALE);
	}
	// Do Sepia
	if($sep != NULL){
		//imagefilter($image, IMG_FILTER_GRAYSCALE);
		//imagefilter($image, IMG_FILTER_COLORIZE, 94,38, 18);
		imagefilter($im,IMG_FILTER_GRAYSCALE);
		imagefilter($im,IMG_FILTER_COLORIZE,100,50,0);
	}
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