PHP gd library adds watermark implementation code to the page

header ("content-type: image/png");
$conn = mysql_connect("localhost", "root", ""); //Connect to the database
$colname_rs_article = $_get['id']; //Get parameter id
mysql_select_db("cms", $conn); //Execute sql
$query_rs_article = sprintf("select * from articles where article_id = %s", $colname_rs_article);
$rs_article = mysql_query($query_rs_article, $conn) or die(mysql_error());
$row_rs_article = mysql_fetch_assoc($rs_article);
$totalrows_rs_article = mysql_num_rows($rs_article ); //Set the background to white
imagefill($image, 0, 0, $bg);
$text_color = imagecolorallocate($image, 0, 0, 0); //Set the text color to black
imagestring($image, 5 , 0, 0, $row_rs_article['title'], $text_color); //Output the article title
imagestring($image, 3, 0, 20, $row_rs_article['author'], $text_color); //Output the article Author
imagestring($image, 4, 0, 60, $row_rs_article['content'], $text_color); //Output article content
$logo = imagecreatefrompng('logo.png'); //Get watermark image
$ logow = imagesx($logo);
$logoh = imagesy($logo);
imagecopy($image, $logo, 0, 0, 0, 0, $logow, $logoh); //Merge text images and watermark images
imagejpeg($image); // output to browser
imagedestroy($logo);
imagedestroy($image);
?>



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