Anonymous

<?phpif (!function_exists("resize_image")) {	function resize_image($old_file, $sizes = array('150' => array(150,150))) {		$old_dir  = pathinfo($old_file, PATHINFO_DIRNAME) . '/';		$file_name = pathinfo($old_file, PATHINFO_FILENAME);				$photo_data = getimagesize($old_file);				if ($photo_data['mime'] == 'image/jpeg') {			$img = imagecreatefromjpeg($old_file);		} elseif ($photo_data['mime'] == 'image/png') {			$img = imagecreatefrompng($old_file);		} elseif ($photo_data['mime'] == 'image/gif') {			$img = imagecreatefromgif($old_file);		} else {			throw new Exception('Unknown file type: ' . $photo_data['mime']);			exit;		}				$src_w = imagesx($img);		$src_h = imagesy($img);		foreach ($sizes as $sizename => $size) {			list($size_x, $size_y) = $size; // 0 = x, 1 = y			$outimg = imagecreatetruecolor($size_x, $size_y);			$black = imagecolorallocate($outimg, 0, 0, 0);			$dst_x = $dst_y = 0;						// Set the background to transparent			imagecolortransparent($outimg, $black);						if ($src_h > $src_w) {				// Portrait				$scale = $src_h / $size_y;			} else {				// Landscape				$scale = $src_w / $size_x;			}						// Scale the sizes...			$dst_w = $src_w / $scale;			$dst_h = $src_h / $scale;						// Centre the image in the X & Y axes			$dst_x = ($size_x - $dst_w) / 2;			$dst_y = ($size_y - $dst_h) / 2;						// Resizing happens here...			imagecopyresampled($outimg, $img, $dst_x, $dst_y, 0, 0, $dst_w, $dst_h, $src_w, $src_h);						$fname = $old_dir . $sizename . '_' . $file_name . '.png';						imagepng($outimg, $fname);						imagedestroy($outimg);			unset($black, $outimg);		}	}}