功能强大的PHP图片处理类(水印、透明度、旋转)

2020-03-22 17:46:21

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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 html' target='_blank'>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 $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
$this - PICTURE_CREATE = imagecreatefromgif($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) $g = ($rgb 8) $b = $rgb $now_color = imagecolorallocate($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。PHP教程

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