文本水印
我们使用函数watermark_text()来生成文本水印，你必须先指定字体源文件、字体大小和字体文本，具体代码如下：
1 | $font_path = "GILSANUB.TTF"; |
3 | $water_mark_text_2 = "phpfuns"; |
5 | function watermark_text($oldimage_name, $new_image_name) |
7 | global $font_path, $font_size, $water_mark_text_2; |
8 | list($owidth,$oheight) = getimagesize($oldimage_name); |
10 | $image = imagecreatetruecolor($width, $height); |
11 | $image_src = imagecreatefromjpeg($oldimage_name); |
12 | imagecopyresampled($image, $image_src, 0, 0, 0, 0, $width, $height, $owidth, $oheight); |
13 | $blue = imagecolorallocate($image, 79, 166, 185); |
14 | imagettftext($image, $font_size, 0, 68, 190, $blue, $font_path, $water_mark_text_2); |
15 | imagejpeg($image, $new_image_name, 100); |
17 | unlink($oldimage_name); |
图片水印
我们使用函数watermark_image()来生成图片水印，你必须先水银图片的源文件。具体代码如下：
1 | $image_path = "phpfuns.png"; |
3 | function watermark_image($oldimage_name, $new_image_name) |
6 | list($owidth,$oheight) = getimagesize($oldimage_name); |
8 | $im = imagecreatetruecolor($width, $height); |
9 | $img_src = imagecreatefromjpeg($oldimage_name); |
10 | imagecopyresampled($im, $img_src, 0, 0, 0, 0, $width, $height, $owidth, $oheight); |
11 | $watermark = imagecreatefrompng($image_path); |
12 | list($w_width, $w_height) = getimagesize($image_path); |
13 | $pos_x = $width - $w_width; |
14 | $pos_y = $height - $w_height; |
15 | imagecopy($im, $watermark, $pos_x, $pos_y, 0, 0, $w_width, $w_height); |
16 | imagejpeg($im, $new_image_name, 100); |
18 | unlink($oldimage_name); |
上传图片表单
我们使用下面的表单来上传图片：
3 | if(isset($_POST['createmark']) and $_POST['createmark'] == "Submit") |
6 | $valid_formats = array("jpg", "bmp","jpeg"); |
7 | $name = $_FILES['imgfile']['name']; |
10 | list($txt, $ext) = explode(".", $name); |
11 | if(in_array($ext,$valid_formats) && $_FILES['imgfile']['size'] <= 256*1024) |
13 | $upload_status = move_uploaded_file($_FILES['imgfile']['tmp_name'], $path.$_FILES['imgfile']['name']); |
15 | $new_name = $path.time().".jpg"; |
16 | // Here you have to user functins watermark_text or watermark_image |
17 | if(watermark_text($path.$_FILES['imgfile']['name'], $new_name)) |
18 | $demo_image = $new_name; |
22 | $msg="File size Max 256 KB or Invalid file format."; |
27 | <form name="imageUpload" method="post" enctype="multipart/form-data" > |
29 | Image :<input type="file" name="imgfile" />
|
30 | <input type="submit" name="createmark" value="Submit" /> |
32 | if(!empty($demo_image)) |
33 | echo ' '; |
实际上就是PHP的gd库，一切就是这么简单！
