我有一个有php&的新闻网站MySQL的
如何添加脚本以自动为我的新闻图像添加水印?
此代码是我与mysql的网站新闻连接:
$sql = mysql_query("SELECT newsid,title,img,stext,ltext,count,date,time,source FROM news WHERE newsid='$newsid' AND cat <> '1' LIMIT 1");
“img”是我的新闻图片文件
如何在“img”文件上添加图像水印?
答案 0 :(得分:0)
您可以使用GD或imageMagick
例如: http://permadi.com/blog/2010/03/using-php-gd-to-add-watermark-to-images/
(来自上面链接的代码)
01 <?php
02 // Load the image where the logo will be embeded into
03 $image = imagecreatefromjpeg($_GET['imageURL']);
04
05
06 // Load the logo image
07 $logoImage = imagecreatefrompng("logo.png");
08 imagealphablending($logoImage, true);
09
10 // Get dimensions
11 $imageWidth=imagesx($image);
12 $imageHeight=imagesy($image);
13
14 $logoWidth=imagesx($logoImage);
15 $logoHeight=imagesy($logoImage);
16
17 // Paste the logo
18 imagecopy(
19 // destination
20 $image,
21 // source
22 $logoImage,
23 // destination x and y
24 $imageWidth-$logoWidth, $imageHeight-$logoHeight,
25 // source x and y
26 0, 0,
27 // width and height of the area of the source to copy
28 $logoWidth, $logoHeight);
29
30 // Set type of image and send the output
31 header("Content-type: image/png");
32 imagePng($image);
33
34 // Release memory
35 imageDestroy($image);
36 imageDestroy($imageLogo);
37 ?>
答案 1 :(得分:0)
这将要求图像作为文件存储在服务器上。
首先,加载CodeIgniter的图像库(如果它尚未自动加载)。
$this->load->library('image_lib');
以下内容将在图像底部添加水印。
$config['source_image'] = '/path/to/image.jpg';
$config['wm_text'] = 'Your watermark text';
$config['wm_type'] = 'text';
$config['wm_font_path'] = './system/fonts/texb.ttf';
$config['wm_font_size'] = '16';
$config['wm_font_color'] = 'ffffff';
$config['wm_vrt_alignment'] = 'bottom';
$config['wm_hor_alignment'] = 'center';
$config['wm_padding'] = '20';
$this->image_lib->initialize($config);
$this->image_lib->watermark();
如果您想要将图像作为水印,请更改
$config['wm_text'] = 'Your watermark text';
$config['wm_type'] = 'text';
到
$config['wm_overlay_path'] = '/path/to/overlay.png';
$config['wm_type'] = 'overlay';
答案 2 :(得分:0)
您可以在PHP中使用GD来创建文本水印。以下代码使用PDO
代替已弃用的mysql_
函数。水印将添加到.png文件中。如果使用其他文件类型,则需要更改imagecreatefrompng()
和标题以适合。如果图像存储为blob
(不推荐),请使用imagecreatefromstring()
和与文件类型相关的标题图像。
<?php
function ImageStringCenter($image, $fontSize, $lineNumber, $totalLines, $text, $color ) {
$centerX = ceil( ( imagesx($image) - ( ImageFontWidth($fontSize) * strlen($text) ) ) / 2 );
$centerY = ceil( ( ( imagesy($image) - ( ImageFontHeight($fontSize) * $totalLines ) ) / 2) + ( ($lineNumber-1) * ImageFontHeight($fontSize) ) );
ImageString($image, $fontSize, $centerX, $centerY, $text, $color );
}
require("dbinfo.php");//database connection paramerters
$id = 1;
//Connect to database
$dbh = new PDO("mysql:host=$host;dbname=$database", $username, $password);
$dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
try {
// Prepare statement
$stmt = $dbh->prepare("SELECT * FROM images WHERE id = ?");
// Assign parameters
$stmt->bindParam(1,$id);
//Execute query
$stmt->setFetchMode(PDO::FETCH_ASSOC);
$stmt->execute();
// Fetch Result
$result = $stmt -> fetch();
$image1 = $result["image2"];
$im = imagecreatefrompng($image1);//for .png file
$text_color = imagecolorallocate($im, 266, 266, 266);
ImageStringCenter($im, 5, 1, 2, "Watermark", $text_color);
ImageStringCenter($im, 5, 2, 2, "20/02/2013", $text_color);
header("Content-Type: image/png");//for .png file
imagepng($im);
imagedestroy($image1);
}
catch(PDOException $e) {
echo "The following error occured.". $e->getMessage() ;// Remove or modify after testing
file_put_contents('PDOErrors.txt',date('[Y-m-d H:i:s]').", mapSelect.php, ". $e->getMessage()."\r\n", FILE_APPEND);
}
//Close the connection
$dbh = null;
?>
示例水印