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Adding watermark to php pictures and adding watermark to uploaded pictures php class_PHP tutorial
Adding watermark to php pictures and adding watermark to uploaded pictures php class_PHP tutorial
WBOY
Release： 2016-07-21 15:38:29
Original
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When a regular website needs to upload pictures, it often needs to add its own website's LOGO watermark to the pictures. So how to implement this step? First, let us understand the principle of watermarking PHP images. Create a graphic by determining the file type, then copy it to the originally created graphic, fill in and create a rectangle, ready to be written to imagestring() or to determine the watermark type in the original image program: First, string , the other is to add a graphics object on top. The following is a reprint of the PHP image with watermark!
Parameter description:
$max_file_size: upload file size limit, unit BYTE $destination_folder: upload file path $watermark: whether to attach a watermark (1 means adding watermark, others (To not add watermark);
Instructions for adding watermark to PHP images: 1. Remove the ; sign in front of the "extension=php_gd2.dll" line in the PHP.INI file, because we need to use it GD library; 2. Change extension_dir = to the directory where your php_gd2.dll is located; 3. http://www.jb51.net/list/list_15_1.htm Code for watermarking PHP images Example:
