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 classpicture{ 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); } functionget_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]){ case1: $this->PICTURE_CREATE=imagecreatefromgif($PICTURE_URL); $this->PICTURE_TYPE="imagejpeg"; $this->PICTURE_EXT="jpg"; break; case2: $this->PICTURE_CREATE=imagecreatefromjpeg($PICTURE_URL); $this->PICTURE_TYPE="imagegif"; $this->PICTURE_EXT="gif"; break; case3: $this->PICTURE_CREATE=imagecreatefrompng($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]); } } #endof__construct /** *将16进制的颜色转换成10进制的(R,G,B) */ functionhex2dec(){ 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 functionzoom_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 functionzoom(){ //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); } #endofzoom //裁切图片,按坐标或自动 functioncut(){ $this->TRUE_COLOR=imagecreatetruecolor($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); } #endofcut /** *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]){ case1: $FORCE_PICTURE_CREATE=imagecreatefromgif($this->FORCE_URL); $FORCE_PICTURE_TYPE="gif"; break; case2: $FORCE_PICTURE_CREATE=imagecreatefromjpeg($this->FORCE_URL); $FORCE_PICTURE_TYPE="jpg"; break; case3: $FORCE_PICTURE_CREATE=imagecreatefrompng($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; } #endofmark functionalpha_(){ $this->TRUE_COLOR=imagecreatetruecolor($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 */ functionturn_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 */ functionturn_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 */ functionturn(){ $this->TRUE_COLOR=imagecreatetruecolor($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 */ functionsharp(){ $this->TRUE_COLOR=imagecreatetruecolor($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("colorallocatefaileat$x,$y($cnt)."); imagesetpixel($this->TRUE_COLOR,$x,$y,$DST_CLR); } } } /** *将图片反色处理?? */ functionreturn_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 */ functionshow(){ //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 */ functionsave_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); } #endofclass } ?>
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。