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首页 / 网页编程 / PHP / 功能强大的PHP图片处理类(水印、透明度、旋转)

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0var $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。