功能强大的PHP图片处理类(水印、透明度、旋转)
发布:smiling 来源: PHP粉丝网 添加日期:2021-06-20 17:24:51 浏览: 评论:0
这篇文章主要汇总介绍了php图片处理类(水印、透明度、缩放、锐化),非常的简单实用,有需要的小伙伴可以参考下。
非常强大的php图片处理类,可以自定义图片水印、透明度、图片缩放、图片锐化、图片旋转、图片翻转、图片剪切、图片反色。
* 图片处理函数功能:缩放、剪切、相框、水印、锐化、旋转、翻转、透明度、反色
* 处理并保存历史记录的思路:当有图片有改动时自动生成一张新图片,命名方式可以考虑在原图片的基础上加上步骤,例如:图片名称+__第几步
具体代码如下:
- <?php
- class picture{
- var $PICTURE_URL; //要处理的图片
- var $DEST_URL = "temp__01.jpg"; //生成目标图片位置
- var $PICTURE_CREATE; //要创建的图片
- var $TURE_COLOR; //新建一个真彩图象
- var $PICTURE_WIDTH; //原图片宽度
- var $PICTURE_HEIGHT; //原图片高度
- /**
- * 水印的类型,默认的为水印文字
- */
- var $MARK_TYPE = 1;
- var $WORD; //经过UTF-8后的文字
- var $WORD_X; //文字横坐标
- var $WORD_Y; //文字纵坐标
- var $FONT_TYPE; //字体类型
- var $FONT_SIZE = "12"; //字体大小
- var $FONT_WORD; //文字
- var $ANGLE = 0; //文字的角度,默认为0
- var $FONT_COLOR = "#000000"; //文字颜色
- var $FONT_PATH = "font/simkai.ttf"; //字体库,默认为宋体
- var $FORCE_URL; //水印图片
- var $FORCE_X = 0; //水印横坐标
- var $FORCE_Y = 0; //水印纵坐标
- var $FORCE_START_X = 0; //切起水印的图片横坐标
- var $FORCE_START_Y = 0; //切起水印的图片纵坐标
- var $PICTURE_TYPE; //图片类型
- var $PICTURE_MIME; //输出的头部
- /**
- * 缩放比例为1的话就按缩放高度和宽度缩放
- */
- var $ZOOM = 1; //缩放类型
- var $ZOOM_MULTIPLE; //缩放比例
- var $ZOOM_WIDTH; //缩放宽度
- var $ZOOM_HEIGHT; //缩放高度
- /**
- * 裁切,按比例和固定长度、宽度
- */
- var $CUT_TYPE = 1; //裁切类型
- var $CUT_X = 0; //裁切的横坐标
- var $CUT_Y = 0; //裁切的纵坐标
- var $CUT_WIDTH = 100; //裁切的宽度
- var $CUT_HEIGHT = 100; //裁切的高度
- /**
- * 锐化
- */
- var $SHARP = "7.0"; //锐化程度
- /**
- * 透明度处理
- */
- var $ALPHA = '100'; //透明度在0-127之间
- var $ALPHA_X = "90";
- var $ALPHA_Y = "50";
- /**
- * 任意角度旋转
- */
- var $CIRCUMROTATE = "90.0"; //注意,必须为浮点数
- /**
- * 出错信息
- */
- var $ERROR = array(
- 'unalviable' => '没有找到相关图片!'
- );
- /**
- * 构造函数:函数初始化
- */
- function __construct($PICTURE_URL){
- $this -> get_info($PICTURE_URL);
- }
- function get_info($PICTURE_URL){
- /**
- * 处理原图片的信息,先检测图片是否存在,不存在则给出相应的信息
- */
- @$SIZE = getimagesize($PICTURE_URL);
- if(!$SIZE){
- exit($this -> ERROR['unalviable']);
- }
- // 得到原图片的信息类型、宽度、高度
- $this -> PICTURE_MIME = $SIZE['mime'];
- $this -> PICTURE_WIDTH = $SIZE[0];
- $this -> PICTURE_HEIGHT = $SIZE[1];
- // 创建图片
- switch($SIZE[2]){
- case 1:
- $this -> PICTURE_CREATE = imagecreatefromgif($PICTURE_URL);
- $this -> PICTURE_TYPE = "imagejpeg";
- $this -> PICTURE_EXT = "jpg";
- break;
- case 2:
- $this -> PICTURE_CREATE = imagecreatefromjpeg($PICTURE_URL);
- $this -> PICTURE_TYPE = "imagegif";
- $this -> PICTURE_EXT = "gif";
- break;
- case 3:
- $this -> PICTURE_CREATE = imagecreatefrompng($PICTURE_URL);
- $this -> PICTURE_TYPE = "imagepng";
- $this -> PICTURE_EXT = "png";
- break;
- }
- /**
- * 文字颜色转换16进制转换成10进制
- */
- preg_match_all("/([0-f]){2,2}/i", $this -> FONT_COLOR, $MATCHES);
- if(count($MATCHES) == 3){
- $this -> RED = hexdec($MATCHES[0][0]);
- $this -> GREEN = hexdec($MATCHES[0][1]);
- $this -> BLUE = hexdec($MATCHES[0][2]);
- }
- }
- # end of __construct
- /**
- * 将16进制的颜色转换成10进制的(R,G,B)
- */
- function hex2dec(){
- preg_match_all("/([0-f]){2,2}/i", $this -> FONT_COLOR, $MATCHES);
- if(count($MATCHES) == 3){
- $this -> RED = hexdec($MATCHES[0][0]);
- $this -> GREEN = hexdec($MATCHES[0][1]);
- $this -> BLUE = hexdec($MATCHES[0][2]);
- }
- }
- // 缩放类型
- function zoom_type($ZOOM_TYPE){
- $this -> ZOOM = $ZOOM_TYPE;
- }
- // 对图片进行缩放,如果不指定高度和宽度就进行缩放
- function zoom(){
- // 缩放的大小
- if($this -> ZOOM == 0){
- $this -> ZOOM_WIDTH = $this -> PICTURE_WIDTH * $this -> ZOOM_MULTIPLE;
- $this -> ZOOM_HEIGHT = $this -> PICTURE_HEIGHT * $this -> ZOOM_MULTIPLE;
- }
- // 新建一个真彩图象
- $this -> TRUE_COLOR = imagecreatetruecolor($this -> ZOOM_WIDTH, $this -> ZOOM_HEIGHT);
- $WHITE = imagecolorallocate($this -> TRUE_COLOR, 255, 255, 255);
- imagefilledrectangle($this -> TRUE_COLOR, 0, 0, $this -> ZOOM_WIDTH, $this -> ZOOM_HEIGHT, $WHITE);
- imagecopyresized($this -> TRUE_COLOR, $this -> PICTURE_CREATE, 0, 0, 0, 0, $this -> ZOOM_WIDTH, $this -> ZOOM_HEIGHT, $this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);
- }
- # end of zoom
- // 裁切图片,按坐标或自动
- function cut(){
- $this -> TRUE_COLOR = imagecreatetruecolor($this -> CUT_WIDTH, $this -> CUT_WIDTH);
- imagecopy($this -> TRUE_COLOR, $this -> PICTURE_CREATE, 0, 0, $this -> CUT_X, $this -> CUT_Y, $this -> CUT_WIDTH, $this -> CUT_HEIGHT);
- }
- # end of cut
- /**
- * 在图片上放文字或图片
- * 水印文字
- */
- function _mark_text(){
- $this -> TRUE_COLOR = imagecreatetruecolor($this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);
- $this -> WORD = mb_convert_encoding($this -> FONT_WORD, 'utf-8', 'gb2312');
- /**
- * 取得使用 TrueType 字体的文本的范围
- */
- $TEMP = imagettfbbox($this -> FONT_SIZE, 0, $this -> FONT_PATH, $this -> WORD);
- $WORD_LENGTH = strlen($this -> WORD);
- $WORD_WIDTH = $TEMP[2] - $TEMP[6];
- $WORD_HEIGHT = $TEMP[3] - $TEMP[7];
- /**
- * 文字水印的默认位置为右下角
- */
- if($this -> WORD_X == ""){
- $this -> WORD_X = $this -> PICTURE_WIDTH - $WORD_WIDTH;
- }
- if($this -> WORD_Y == ""){
- $this -> WORD_Y = $this -> PICTURE_HEIGHT - $WORD_HEIGHT;
- }
- imagesettile($this -> TRUE_COLOR, $this -> PICTURE_CREATE);
- imagefilledrectangle($this -> TRUE_COLOR, 0, 0, $this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT, IMG_COLOR_TILED);
- $TEXT2 = imagecolorallocate($this -> TRUE_COLOR, $this -> RED, $this -> GREEN, $this -> Blue);
- imagettftext($this -> TRUE_COLOR, $this -> FONT_SIZE, $this -> ANGLE, $this -> WORD_X, $this -> WORD_Y, $TEXT2, $this -> FONT_PATH, $this -> WORD);
- }
- /**
- * 水印图片
- */
- function _mark_picture(){
- /**
- * 获取水印图片的信息
- */
- @$SIZE = getimagesize($this -> FORCE_URL);
- if(!$SIZE){
- exit($this -> ERROR['unalviable']);
- }
- $FORCE_PICTURE_WIDTH = $SIZE[0];
- $FORCE_PICTURE_HEIGHT = $SIZE[1];
- // 创建水印图片
- switch($SIZE[2]){
- case 1:
- $FORCE_PICTURE_CREATE = imagecreatefromgif($this -> FORCE_URL);
- $FORCE_PICTURE_TYPE = "gif";
- break;
- case 2:
- $FORCE_PICTURE_CREATE = imagecreatefromjpeg($this -> FORCE_URL);
- $FORCE_PICTURE_TYPE = "jpg";
- break;
- case 3:
- $FORCE_PICTURE_CREATE = imagecreatefrompng($this -> FORCE_URL);
- $FORCE_PICTURE_TYPE = "png";
- break;
- }
- /**
- * 判断水印图片的大小,并生成目标图片的大小,如果水印比图片大,则生成图片大小为水印图片的大小。否则生成的图片大小为原图片大小。
- */
- $this -> NEW_PICTURE = $this -> PICTURE_CREATE;
- if($FORCE_PICTURE_WIDTH > $this -> PICTURE_WIDTH){
- $CREATE_WIDTH = $FORCE_PICTURE_WIDTH - $this -> FORCE_START_X;
- }else{
- $CREATE_WIDTH = $this -> PICTURE_WIDTH;
- }
- if($FORCE_PICTURE_HEIGHT > $this -> PICTURE_HEIGHT){
- $CREATE_HEIGHT = $FORCE_PICTURE_HEIGHT - $this -> FORCE_START_Y;
- }else{
- $CREATE_HEIGHT = $this -> PICTURE_HEIGHT;
- }
- /**
- * 创建一个画布
- */
- $NEW_PICTURE_CREATE = imagecreatetruecolor($CREATE_WIDTH, $CREATE_HEIGHT);
- $WHITE = imagecolorallocate($NEW_PICTURE_CREATE, 255, 255, 255);
- /**
- * 将背景图拷贝到画布中
- */
- imagecopy($NEW_PICTURE_CREATE, $this -> PICTURE_CREATE, 0, 0, 0, 0, $this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);
- /**
- * 将目标图片拷贝到背景图片上
- */
- imagecopy($NEW_PICTURE_CREATE, $FORCE_PICTURE_CREATE, $this -> FORCE_X, $this -> FORCE_Y, $this -> FORCE_START_X, $this -> FORCE_START_Y, $FORCE_PICTURE_WIDTH, $FORCE_PICTURE_HEIGHT);
- $this -> TRUE_COLOR = $NEW_PICTURE_CREATE;
- }
- # end of mark
- function alpha_(){
- $this -> TRUE_COLOR = imagecreatetruecolor($this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);
- $rgb = "#CDCDCD";
- $tran_color = "#000000";
- for($j = 0;$j <= $this -> PICTURE_HEIGHT-1;$j++){
- for ($i = 0;$i <= $this -> PICTURE_WIDTH-1;$i++)
- {
- $rgb = imagecolorat($this -> PICTURE_CREATE, $i, $j);
- $r = ($rgb >> 16) & 0xFF;
- $g = ($rgb >> 8) & 0xFF;
- $b = $rgb & 0xFF;
- $now_color = imagecolorallocate($this -> PICTURE_CREATE, $r, $g, $b);
- if ($now_color == $tran_color)
- {
- continue;
- }
- else
- {
- $color = imagecolorallocatealpha($this -> PICTURE_CREATE, $r, $g, $b, $ALPHA);
- imagesetpixel($this -> PICTURE_CREATE, $ALPHA_X + $i, $ALPHA_Y + $j, $color);
- }
- $this -> TRUE_COLOR = $this -> PICTURE_CREATE;
- }
- }
- }
- /**
- * 图片旋转:
- * 沿y轴旋转
- */
- function turn_y(){
- $this -> TRUE_COLOR = imagecreatetruecolor($this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);
- for ($x = 0; $x < $this -> PICTURE_WIDTH; $x++)
- {
- imagecopy($this -> TRUE_COLOR, $this -> PICTURE_CREATE, $this -> PICTURE_WIDTH - $x - 1, 0, $x, 0, 1, $this -> PICTURE_HEIGHT);
- }
- }
- /**
- * 沿X轴旋转
- */
- function turn_x(){
- $this -> TRUE_COLOR = imagecreatetruecolor($this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);
- for ($y = 0; $y < $this -> PICTURE_HEIGHT; $y++){
- imagecopy($this -> TRUE_COLOR, $this -> PICTURE_CREATE, 0, $this -> PICTURE_HEIGHT - $y - 1, 0, $y, $this -> PICTURE_WIDTH, 1);
- }
- }
- /**
- * 任意角度旋转
- */
- function turn(){
- $this -> TRUE_COLOR = imagecreatetruecolor($this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);
- imageCopyResized($this -> TRUE_COLOR, $this -> PICTURE_CREATE, 0, 0, 0, 0, $this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT, $this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);
- $WHITE = imagecolorallocate($this -> TRUE_COLOR, 255, 255, 255);
- $this -> TRUE_COLOR = imagerotate ($this -> TRUE_COLOR, $this -> CIRCUMROTATE, $WHITE);
- }
- /**
- * 图片锐化
- */
- function sharp(){
- $this -> TRUE_COLOR = imagecreatetruecolor($this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);
- $cnt = 0;
- for ($x = 0; $x < $this -> PICTURE_WIDTH; $x++){
- for ($y = 0; $y < $this -> PICTURE_HEIGHT; $y++){
- $src_clr1 = imagecolorsforindex($this -> TRUE_COLOR, imagecolorat($this -> PICTURE_CREATE, $x-1, $y-1));
- $src_clr2 = imagecolorsforindex($this -> TRUE_COLOR, imagecolorat($this -> PICTURE_CREATE, $x, $y));
- $r = intval($src_clr2["red"] + $this -> SHARP * ($src_clr2["red"] - $src_clr1["red"]));
- $g = intval($src_clr2["green"] + $this -> SHARP * ($src_clr2["green"] - $src_clr1["green"]));
- $b = intval($src_clr2["blue"] + $this -> SHARP * ($src_clr2["blue"] - $src_clr1["blue"]));
- $r = min(255, max($r, 0));
- $g = min(255, max($g, 0));
- $b = min(255, max($b, 0));
- if (($DST_CLR = imagecolorexact($this -> PICTURE_CREATE, $r, $g, $b)) == -1)
- $DST_CLR = imagecolorallocate($this -> PICTURE_CREATE, $r, $g, $b);
- $cnt++;
- if ($DST_CLR == -1) die("color allocate faile at $x, $y ($cnt).");
- imagesetpixel($this -> TRUE_COLOR, $x, $y, $DST_CLR);
- }
- }
- }
- /**
- * 将图片反色处理??
- */
- function return_color(){
- /**
- * 创建一个画布
- */
- $NEW_PICTURE_CREATE = imagecreate($this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);
- $WHITE = imagecolorallocate($NEW_PICTURE_CREATE, 255, 255, 255);
- /**
- * 将背景图拷贝到画布中
- */
- imagecopy($NEW_PICTURE_CREATE, $this -> PICTURE_CREATE, 0, 0, 0, 0, $this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);
- $this -> TRUE_COLOR = $NEW_PICTURE_CREATE;
- }
- /**
- * 生成目标图片并显示
- */
- function show(){
- // 判断浏览器,若是IE就不发送头
- if(isset($_SERVER['HTTP_USER_AGENT']))
- {
- $ua = strtoupper($_SERVER['HTTP_USER_AGENT']);
- if(!preg_match('/^.*MSIE.*\)$/i', $ua))
- {
- header("Content-type:$this->PICTURE_MIME");
- }
- }
- $OUT = $this -> PICTURE_TYPE;
- $OUT($this -> TRUE_COLOR);
- }
- /**
- * 生成目标图片并保存
- */
- function save_picture(){
- // 以 JPEG 格式将图像输出到浏览器或文件
- $OUT = $this -> PICTURE_TYPE;
- if(function_exists($OUT)){
- // 判断浏览器,若是IE就不发送头
- if(isset($_SERVER['HTTP_USER_AGENT']))
- {
- $ua = strtoupper($_SERVER['HTTP_USER_AGENT']);
- if(!preg_match('/^.*MSIE.*\)$/i', $ua))
- {
- header("Content-type:$this->PICTURE_MIME");
- }
- }
- if(!$this -> TRUE_COLOR){
- exit($this -> ERROR['unavilable']);
- }else{
- $OUT($this -> TRUE_COLOR, $this -> DEST_URL);
- $OUT($this -> TRUE_COLOR);
- }
- }
- }
- /**
- * 析构函数:释放图片
- */
- function __destruct(){
- /**
- * 释放图片
- */
- imagedestroy($this -> TRUE_COLOR);
- imagedestroy($this -> PICTURE_CREATE);
- }
- # end of class
- }
- ?>
这就是非常强大的php图片处理类,好好收藏,亲,相信以后一定会派上用场的。
Tags: PHP图片处理类
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