如何在我的新闻网站中添加自动水印脚本?

时间:2013-02-22 15:26:41

标签: php mysql

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?

3 个答案:

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';

$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 Sample watermark