How can I change this into an UPDATE, not INSERT ..?

spacepoet · May 22, 2011

Hello:

Can someone give me some insight on how to be able to not just add (INSERT) a photo and photo description with the following code, but also how to add the ability to UPDATE (if the user wants to replace a photo or adjust the photo description):

<?php
include("config.inc.php");

// initialization
$result_final = "";
$counter = 0;

// List of our known photo types
$known_photo_types = array( 
					'image/pjpeg' => 'jpg',
					'image/jpeg' => 'jpg',
					'image/gif' => 'gif',
					'image/bmp' => 'bmp',
					'image/x-png' => 'png'
				);

// GD Function List
$gd_function_suffix = array( 
					'image/pjpeg' => 'JPEG',
					'image/jpeg' => 'JPEG',
					'image/gif' => 'GIF',
					'image/bmp' => 'WBMP',
					'image/x-png' => 'PNG'
				);

// Fetch the photo array sent by preupload.php
$photos_uploaded = $_FILES['photo_filename'];

// Fetch the photo caption array
$photo_caption = $_POST['photo_caption'];

while( $counter <= count($photos_uploaded) )
{
	if($photos_uploaded['size'][$counter] > 0)
	{
		if(!array_key_exists($photos_uploaded['type'][$counter], $known_photo_types))
		{
			$result_final .= "File ".($counter+1)." is not a photo<br />";
		}
		else
		{
			mysql_query( "INSERT INTO gallery_photos(`photo_filename`, `photo_caption`, `photo_category`) VALUES('0', '".addslashes($photo_caption[$counter])."', '".addslashes($_POST['category'])."')" );
			$new_id = mysql_insert_id();
			$filetype = $photos_uploaded['type'][$counter];
			$extention = $known_photo_types[$filetype];
			$filename = $new_id.".".$extention;

			mysql_query( "UPDATE gallery_photos SET photo_filename='".addslashes($filename)."' WHERE photo_id='".addslashes($new_id)."'" );

			// Store the orignal file
			copy($photos_uploaded['tmp_name'][$counter], $images_dir."/".$filename);

			// Let's get the Thumbnail size
			$size = GetImageSize( $images_dir."/".$filename );
			if($size[0] > $size[1])
			{
				$thumbnail_width = 100;
				$thumbnail_height = (int)(100 * $size[1] / $size[0]);
			}
			else
			{
				$thumbnail_width = (int)(100 * $size[0] / $size[1]);
				$thumbnail_height = 100;
			}

			// Build Thumbnail with GD 1.x.x, you can use the other described methods too
			$function_suffix = $gd_function_suffix[$filetype];
			$function_to_read = "ImageCreateFrom".$function_suffix;
			$function_to_write = "Image".$function_suffix;

			// Read the source file
			$source_handle = $function_to_read ( $images_dir."/".$filename ); 

			if($source_handle)
			{
				// Let's create an blank image for the thumbnail
			     	$destination_handle = ImageCreate ( $thumbnail_width, $thumbnail_height );

				// Now we resize it
		      	ImageCopyResized( $destination_handle, $source_handle, 0, 0, 0, 0, $thumbnail_width, $thumbnail_height, $size[0], $size[1] );
			}

			// Let's save the thumbnail
			$function_to_write( $destination_handle, $images_dir."/tb_".$filename );
			ImageDestroy($destination_handle );
			//

			$result_final .= "<img src='".$images_dir. "/tb_".$filename."' /> File ".($counter+1)." Added<br />";
		}
	}
$counter++;
}

// Print Result
echo <<<__HTML_END

<html>
<head>
<title>Photos uploaded</title>
</head>
<body>
$result_final
</body>
</html>

__HTML_END;
?>

The tutorial says to edit a photo, simply add:

function edit_photo( $photo_id, $new_caption, $new_category )        <br>
{        <br>
  mysql_query( "UPDATE gallery_photo SET photo_caption='".addslashes( $new_caption )."', photo_category='".addslashes( $new_category )."' WHERE photo_id='".addslashes( $photo_id )."'"  );        <br>
}

But I can not figure out how to call that function.

Anyone help me out?

Thanks.

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How can I change this into an UPDATE, not INSERT ..?

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