php实现的通用图片处理类

本文实例讲述了php实现的通用图片处理类。分享给大家供大家参考。具体如下：该图片处理

本文实例讲述了php实现的通用图片处理类。分享给大家供大家参考。具体如下：

该图片处理函数功能：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。 在一些需要图片高级处理功能的Web应用中，可以参考这个类。

<?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_;//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_;
 $this->PICTURE_HEIGHT=$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_;gt;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_;
 $FORCE_PICTURE_HEIGHT=$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_;gt;FORCE_START_X;
 }
 else
 {
 $CREATE_;gt;PICTURE_WIDTH;
 }
 if($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
}
?>

希望本文所述对大家的php程序设计有所帮助。