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
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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($this->image); }} |
2.测试参考代码
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require_once('ImageToTest.class.php');/*$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
