Something

	// gives a nice rectangular crop of an image
	function zoom_crop($img, $w, $h)
	{
		// min resize the bastard...
		$img = c_minresize($img, $w, $h);
		
		$orig_w = imagesx($img);
		$orig_h = imagesy($img);
		
		$start_y = floor(($orig_h - $h) /5);
		$start_x = floor(($orig_w - $w) /2);

		// now lets create a new image...
		$new_im = imagecreatetruecolor($w, $h);
		
		imagecopy($new_im, $img,
					0,0,
					$start_x, $start_y,
					$w,$h);
							
		return $new_im;
	}

	// modified from: http://www.zend.com/codex.php?id=379&single=1
	// original author of c_resize: http://www.zend.com/search_code_author.php?author=allah03
	function c_resize( $img, $max_width, $max_height) 
	{ 
		$FullImage_width 	= imagesx ($img);    	// Original image width 
		$FullImage_height 	= imagesy ($img);    	// Original image height 
		 
		// now we check for over-sized images and pare them down 
		// to the dimensions we need for display purposes 
		$ratio =  ( $FullImage_width > $max_width ) ? (real)($max_width / $FullImage_width) : 1 ; 
		$new_width = ((int)($FullImage_width * $ratio));    //full-size width 
		$new_height = ((int)($FullImage_height * $ratio));    //full-size height 
		//check for images that are still too high 
		$ratio =  ( $new_height > $max_height ) ? (real)($max_height / $new_height) : 1 ; 
		$new_width = ((int)($new_width * $ratio));    //mid-size width 
		$new_height = ((int)($new_height * $ratio));    //mid-size height 
		 
		$NEW_IM = imagecreatetruecolor( $new_width , $new_height );        //create an image 
		imagecopyresampled( $NEW_IM, $img, 
						0,0,  0,0, //starting points 
						$new_width, $new_height, 
						$FullImage_width, $FullImage_height ); 
	
		return $NEW_IM;     
	}
	
	// constrained resize.. (min value)
	function c_minresize($img, $w, $h)
	{
		$src_w = imagesx($img);
		$src_h = imagesy($img);

		$pct_w = ($w / $src_w) * 100;
		$pct_h = ($h / $src_h) * 100;
		
		if($pct_w > $pct_h)
		{
			$new_w = $src_w * ($pct_w / 100);
			$new_h = $src_h * ($pct_w / 100);
		}
		else
		{
			$new_w = $src_w * ($pct_h / 100);
			$new_h = $src_h * ($pct_h / 100);
		}

		$new_w *= 1.05;
		$new_h *= 1.05;
		
		return c_resize( $img, $new_w, $new_h);
	}