本文实例讲述了PHP开发的文字水印,缩略图,图片水印实现类与用法。分享给大家供大家参考,具体如下:
1.实现类ImageToTest.class.php参考代码
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
class ImageToTest {
/**
* 图片的基本信息
*/
private $info ;
private $image ;
public function __construct( $src ){
$info = getimagesize ( $src );
$this ->info = array (
'width' => $info [0],
'height' => $info [1],
'type' => image_type_to_extension( $info [2],false),
'mime' => $info [ 'mime' ]
);
$fun = "imagecreatefrom{$this->info['type']}" ;
$this ->image = $fun ( $src );
}
/**
* 操作图片 (压缩)
*/
public function thumb( $width , $height ){
$image_thumb = imagecreatetruecolor( $width , $height );
imagecopyresampled( $image_thumb , $this ->image,0,0,0,0, $width , $height ,
$this ->info[ 'width' ], $this ->info[ 'height' ]);
imagedestroy( $this ->image);
$this ->image = $image_thumb ;
}
/**
* 操作图片(添加文字水印)
*/
public function fontMark( $content , $font_url , $size , $color , $local , $angle ){
$col = imagecolorallocatealpha( $this ->image, $color [0], $color [1], $color [2], $color [3]);
imagettftext( $this ->image, $size , $angle , $local [ 'x' ], $local [ 'y' ], $col , $font_url , $content );
}
/**
* 操作图片(添加水印图片)
*/
public function imageMark( $source , $local , $alpha ){
//1.获取水印图片的基本信息
$info2 = getimagesize ( $source );
//2.通过水印的图片编号来获取水印的图片类型
$type2 = image_type_to_extension( $info2 [2],false);
//3.在内存中创建一个和我们的水印图像一致的图像类型
$func2 = "imagecreatefrom{$type2}" ;
//4.把水印图片复制到内存中
$water = $func2 ( $source );
//5.合并图片
imagecopymerge( $this ->image, $water , $local [ 'x' ], $local [ 'y' ],0,0, $info2 [0], $info2 [1], $alpha );
//6.销毁水印图片
imagedestroy( $water );
}
/**
* 在浏览器中输出图片
*/
public function show(){
header( "Content-type:" . $this ->info[ 'mime' ]);
$funs = "image{$this->info['type']}" ;
$funs ( $this ->image);
}
/**
* 把图片保存到硬盘里
*/
public function save( $newName ){
$funs = "image{$this->info['type']}" ;
$funs ( $this ->image, './outPut/' . $newName . '.' . $this ->info[ 'type' ]);
}
/**
* 销毁图片 使用析构函数
*/
public function __destruct()
{
imagedestroy( $this ->image);
}
}
|
2.测试参考代码
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
require_once ( 'ImageToTest.class.php' );
/*$src = './image/wbg.jpg';
$image = new ImageToTest($src);
$image->thumb(700,550);
$image->show();*/
/*$src2 = './image/wbg.jpg';
$content = 'SGC';
$font_url = './image/YGYcuhei.ttf';
$size = 33;
$color = array(
0=>2,
1=>222,
2=>222,
3=>60
);
$local = array(
'x'=>20,
'y'=>100
);
$angle = 10;
$image2 = new ImageToTest($src2);
$image2->fontMark($content,$font_url,$size,$color,$local,$angle);
$image2->show();
$image2->save('hahahah');*/
$src3 = './image/wbg.jpg' ;
$source = './image/water.jpg' ;
$local = array (
'x' =>20,
'y' =>100
);
$font_url = './image/YGYcuhei.ttf' ;
$size = 38;
$color = array (
0=>2,
1=>222,
2=>222,
3=>60
);
$alpha = 60;
$angle = 50;
$image3 = new ImageToTest( $src3 );
$image3 ->imageMark( $source , $local , $alpha );
$image3 ->thumb(700,550);
$image3 ->fontMark( 'Hello' , $font_url , $size , $color , $local , $angle );
$image3 ->show();
$image3 ->save( 'WAWAWAWAWA' );
|
希望本文所述对大家PHP程序设计有所帮助。
原文链接:https://blog.csdn.net/u011415782/article/details/51598081