showimg($thumbfile);
}
//不存在输出
if(copy($url,$tempfile)){
//判断图片大小 如果图片宽和高都小于要缩放的比例 直接输出
$info = getimagesize($tempfile);
//判断处理图片大约需要的内存
$need_memory = (($info[0]*$info[1])/100000);
$memory_limit = ini_get('memory_limit');
if( ($need_memory > $memory_limit) && ($need_memory ini_set('memory_limit',$need_memory.'m');
}
if($info[0] copy($tempfile,$thumbfile);
$img->showimg($thumbfile,'',$info[0],$info[1]);
unlink($tempfile);
unlink($grab_temp_file);
exit;
}else{
//生成缩图
if($t=='c'){
$thumb = $img->cutthumb($tempfile,$thumbfile,$w,$h);
}elseif($t=='f'){
$thumb = $img->thumb($tempfile,'',$thumbfile,$w,$h);
}
//输出缩图
$img->showimg($thumb,'',$w,$h);
unlink($tempfile);
unlink($grab_temp_file);
exit;
}
}
//获取远程图片
function grabimage($url,$thumbdir) {
if($url==) return false;
$filename = md5($url).strrchr($url,.);
$img = file_get_contents($url);
if(!$img) return false;
$filepath = $thumbdir.$filename;
$result = file_put_contents($filepath,$img);
if($result){
return $filepath;
}else{
return false;
}
}
//检查并创建多级目录
function checkdir($path){
$patharray = explode('/',$path);
$nowpath = '';
array_pop($patharray);
foreach ($patharray as $key=>$value){
if ( ''==$value ){
unset($patharray[$key]);
}else{
if ( $key == 0 )
$nowpath .= $value;
else
$nowpath .= '/'.$value;
if ( !is_dir($nowpath) ){
if ( !mkdir($nowpath, 0777) ) return false;
}
}
}
return true;
}
function imagecreatefrombmp($fname) {
$buf=@file_get_contents($fname);
if(strlen($buf)
$file_header=unpack(sbftype/lbfsize/sbfreserved1/sbfreserved2/lbfoffbits,substr($buf,0,14));
if($file_header[bftype]!=19778) return false;
$info_header=unpack(lbisize/lbiwidth/lbiheight/sbiplanes/sbibitcountlbicompression/lbisizeimage/lbixpelspermeter/lbiypelspermeter/lbiclrused/lbiclrimportant,substr($buf,14,40));
if($info_header[bibitcountlbicompression]==2) return false;
$line_len=round($info_header[biwidth]*$info_header[bibitcountlbicompression]/8);
$x=$line_len%4;
if($x>0) $line_len+=4-$x;
$img=imagecreatetruecolor($info_header[biwidth],$info_header[biheight]);
switch($info_header[bibitcountlbicompression]){
case 4:
$colorset=unpack(l*,substr($buf,54,64));
for($y=0;$y $colors=array();
$y_pos=$y*$line_len+$file_header[bfoffbits];
for($x=0;$x if($x%2)
$colors[]=$colorset[(ord($buf[$y_pos+($x+1)/2])&0xf)+1];
else
$colors[]=$colorset[((ord($buf[$y_pos+$x/2+1])>>4)&0xf)+1];
}
imagesetstyle($img,$colors);
imageline($img,0,$info_header[biheight]-$y-1,$info_header[biwidth],$info_header[biheight]-$y-1,img_color_styled);
}
break;
case 8:
$colorset=unpack(l*,substr($buf,54,1024));
for($y=0;$y $colors=array();
$y_pos=$y*$line_len+$file_header[bfoffbits];
for($x=0;$x $colors[]=$colorset[ord($buf[$y_pos+$x])+1];
}
imagesetstyle($img,$colors);
imageline($img,0,$info_header[biheight]-$y-1,$info_header[biwidth],$info_header[biheight]-$y-1,img_color_styled);
}
break;
case 16:
for($y=0;$y $colors=array();
$y_pos=$y*$line_len+$file_header[bfoffbits];
for($x=0;$x $i=$x*2;
$color=ord($buf[$y_pos+$i])|(ord($buf[$y_pos+$i+1]) $colors[]=imagecolorallocate($img,(($color>>10)&0x1f)*0xff/0x1f,(($color>>5)&0x1f)*0xff/0x1f,($color&0x1f)*0xff/0x1f);
}
imagesetstyle($img,$colors);
imageline($img,0,$info_header[biheight]-$y-1,$info_header[biwidth],$info_header[biheight]-$y-1,img_color_styled);
}
break;
case 24:
for($y=0;$y $colors=array();
$y_pos=$y*$line_len+$file_header[bfoffbits];
for($x=0;$x $i=$x*3;
$colors[]=imagecolorallocate($img,ord($buf[$y_pos+$i+2]),ord($buf[$y_pos+$i+1]),ord($buf[$y_pos+$i]));
}
imagesetstyle($img,$colors);
imageline($img,0,$info_header[biheight]-$y-1,$info_header[biwidth],$info_header[biheight]-$y-1,img_color_styled);
}
break;
default:
return false;
break;
}
return $img;
}
function imagebmp(&$im, $filename = '', $bit = 8, $compression = 0)
{
if (!in_array($bit, array(1, 4, 8, 16, 24, 32)))
{
$bit = 8;
}
else if ($bit == 32) // todo:32 bit
{
$bit = 24;
}
$bits = pow(2, $bit);
// 调整调色板
imagetruecolortopalette($im, true, $bits);
$width = imagesx($im);
$height = imagesy($im);
$colors_num = imagecolorstotal($im);
if ($bit {
// 颜色索引
$rgb_quad = '';
for ($i = 0; $i {
$colors = imagecolorsforindex($im, $i);
$rgb_quad .= chr($colors['blue']) . chr($colors['green']) . chr($colors['red']) . \0; }
// 位图数据
$bmp_data = '';
// 非压缩
if ($compression == 0 || $bit {
if (!in_array($bit, array(1, 4, 8)))
{
$bit = 8;
}
$compression = 0;
// 每行字节数必须为4的倍数，补齐。
$extra = '';
$padding = 4 - ceil($width / (8 / $bit)) % 4;
if ($padding % 4 != 0)
{
$extra = str_repeat(\0, $padding);
}
for ($j = $height - 1; $j >= 0; $j --)
{
$i = 0;
while ($i {
$bin = 0;
$limit = $width - $i
for ($k = 8 - $bit; $k >= $limit; $k -= $bit)
{
$index = imagecolorat($im, $i, $j);
$bin |= $index $i ++;
}
$bmp_data .= chr($bin);
}
$bmp_data .= $extra;
}
}
// rle8 压缩
else if ($compression == 1 && $bit == 8)
{
for ($j = $height - 1; $j >= 0; $j --)
{
$last_index = \0;
$same_num = 0;
for ($i = 0; $i {
$index = imagecolorat($im, $i, $j);
if ($index !== $last_index || $same_num > 255)
{
if ($same_num != 0)
{
$bmp_data .= chr($same_num) . chr($last_index);
}
$last_index = $index;
$same_num = 1;
}
else
{
$same_num ++;
}
}
$bmp_data .= \0\0;
}
$bmp_data .= \0\1;
}
$size_quad = strlen($rgb_quad);
$size_data = strlen($bmp_data);
}
else
{
// 每行字节数必须为4的倍数，补齐。
$extra = '';
$padding = 4 - ($width * ($bit / 8)) % 4;
if ($padding % 4 != 0)
{
$extra = str_repeat(\0, $padding);
}
// 位图数据
$bmp_data = '';
for ($j = $height - 1; $j >= 0; $j --)
{
for ($i = 0; $i {
$index = imagecolorat($im, $i, $j);
$colors = imagecolorsforindex($im, $index);
if ($bit == 16)
{
$bin = 0
$bin |= ($colors['red'] >> 3) $bin |= ($colors['green'] >> 3) $bin |= $colors['blue'] >> 3;
$bmp_data .= pack(v, $bin);
}
else
{
$bmp_data .= pack(c*, $colors['blue'], $colors['green'], $colors['red']);
}
// todo: 32bit;
}
$bmp_data .= $extra;
}
$size_quad = 0;
$size_data = strlen($bmp_data);
$colors_num = 0;
}
// 位图文件头
$file_header = bm . pack(v3, 54 + $size_quad + $size_data, 0, 54 + $size_quad);
// 位图信息头
$info_header = pack(v3v2v*, 0x28, $width, $height, 1, $bit, $compression, $size_data, 0, 0, $colors_num, 0);
// 写入文件
if ($filename != '')
{
$fp = fopen(test.bmp, wb);
fwrite($fp, $file_header);
fwrite($fp, $info_header);
fwrite($fp, $rgb_quad);
fwrite($fp, $bmp_data);
fclose($fp);
return 1;
}
// 浏览器输出
header(content-type: image/bmp);
echo $file_header . $info_header;
echo $rgb_quad;
echo $bmp_data;
return 1;
}
class image
{//类定义开始
/**
+----------------------------------------------------------
* 架构函数
*
+----------------------------------------------------------
* @access public
+----------------------------------------------------------
*/
function __construct()
{
}
/**
+----------------------------------------------------------
* 取得图像信息
*
+----------------------------------------------------------
* @static
* @access public
+----------------------------------------------------------
* @param string $image 图像文件名
+----------------------------------------------------------
* @return mixed
+----------------------------------------------------------
*/
function getimageinfo($img) {
$imageinfo = getimagesize($img);
if( $imageinfo!== false) {
if(function_exists(image_type_to_extension)){
$imagetype = strtolower(substr(image_type_to_extension($imageinfo[2]),1));
}else{
$imagetype = strtolower(substr($img,strrpos($img,'.')+1));
}
$imagesize = filesize($img);
$info = array(
width=>$imageinfo[0],
height=>$imageinfo[1],
type=>$imagetype,
size=>$imagesize,
mime=>$imageinfo['mime']
);
return $info;
}else {
return false;
}
}
/**
+----------------------------------------------------------
* 显示服务器图像文件
* 支持url方式
+----------------------------------------------------------
* @static
* @access public
+----------------------------------------------------------
* @param string $imgfile 图像文件名
* @param string $text 文字字符串
* @param string $width 图像宽度
* @param string $height 图像高度
+----------------------------------------------------------
* @return void
+----------------------------------------------------------
*/
function showimg($imgfile,$text='',$width=80,$height=30) {
//获取图像文件信息
//2007/6/26 增加图片水印输出，$text为图片的完整路径即可
$info = image::getimageinfo($imgfile);
if($info !== false) {
$createfun = str_replace('/','createfrom',$info['mime']);
$im = $createfun($imgfile);
if($im) {
$imagefun= str_replace('/','',$info['mime']);
//水印开始
if(!empty($text)) {
$tc = imagecolorallocate($im, 0, 0, 0);
if(is_file($text)&&file_exists($text)){
// 取得水印信息
$textinfo = image::getimageinfo($text);
$createfun2= str_replace('/','createfrom',$textinfo['mime']);
$watermark = $createfun2($text);
$imgw = $info[width];
$imgh = $info[width]*$textinfo[height]/$textinfo[width];
$y = ($info[height]-$textinfo[height])/2;
if(function_exists(imagecopyresampled))
imagecopyresampled($im,$watermark,0,$y,0,0, $imgw,$imgh, $textinfo[width],$textinfo[height]);
else
imagecopyresized($im,$watermark,0,$y,0,0,$imgw,$imgh, $textinfo[width],$textinfo[height]);
}else{
imagestring($im, 3, 5, 5, $text, $tc);
}
//imagedestroy($tc);
}
//水印结束
if($info['type']=='png' || $info['type']=='gif') {
imagealphablending($im, false);//取消默认的混色模式
imagesavealpha($im,true);//设定保存完整的 alpha 通道信息
}
header(content-type: .$info['mime']);
$imagefun($im);
@imagedestroy($im);
return ;
}
}
//获取或者创建图像文件失败则生成空白png图片
$im = imagecreatetruecolor($width, $height);
$bgc = imagecolorallocate($im, 255, 255, 255);
$tc = imagecolorallocate($im, 0, 0, 0);
imagefilledrectangle($im, 0, 0, 150, 30, $bgc);
imagestring($im, 4, 5, 5, no pic, $tc);
image::output($im);
return ;
}
// 切割缩图cutthumb
// 2007/6/15
function cutthumb($image,$filename='',$maxwidth='200',$maxheight='50',$wartermark='',$type='',$interlace=true,$suffix='_thumb')
{
// 获取原图信息
$info = image::getimageinfo($image);
if($info !== false) {
$srcwidth = $info['width'];
$srcheight = $info['height'];
$pathinfo = pathinfo($image);
$type = $pathinfo['extension'];
$type = empty($type)?$info['type']:$type;
$type = strtolower($type);
$interlace = $interlace? 1:0;
unset($info);
// 载入原图
$createfun = 'imagecreatefrom'.($type=='jpg'?'jpeg':$type);
$srcimg = $createfun($image);
//创建缩略图
if($type!='gif' && function_exists('imagecreatetruecolor'))
$thumbimg = imagecreatetruecolor($maxwidth, $maxheight);
else
$thumbimg = imagecreate($maxwidth, $maxheight);
// 新建png缩略图通道透明处理
if('png'==$type) {
imagealphablending($thumbimg, false);//取消默认的混色模式
imagesavealpha($thumbimg,true);//设定保存完整的 alpha 通道信息
}elseif('gif'==$type) {
// 新建gif缩略图预处理，保证透明效果不失效
$background_color = imagecolorallocate($thumbimg, 0,255,0); // 指派一个绿色
imagecolortransparent($thumbimg,$background_color); // 设置为透明色，若注释掉该行则输出绿色的图
}
// 计算缩放比例
if(($maxwidth/$maxheight)>=($srcwidth/$srcheight)){
//宽不变,截高，从中间截取 y=
$width = $srcwidth;
$height = $srcwidth*($maxheight/$maxwidth);
$x = 0;
$y = ($srcheight-$height)*0.5;
}else{
//高不变,截宽，从中间截取，x=
$width = $srcheight*($maxwidth/$maxheight);
$height = $srcheight;
$x = ($srcwidth-$width)*0.5;
$y = 0;
}
// 复制图片
if(function_exists(imagecopyresampled)){
imagecopyresampled($thumbimg, $srcimg, 0, 0, $x, $y, $maxwidth, $maxheight, $width,$height);
}else{
imagecopyresized($thumbimg, $srcimg, 0, 0, $x, $y, $maxwidth, $maxheight, $width,$height);
}
imagedestroy($srcimg);
/*水印开始* /
if($wartermark){
//计算水印的位置,默认居中
$textinfo = image::getimageinfo($wartermark);
$textw = $textinfo[width];
$texth = $textinfo[height];
unset($textinfo);
$mark = imagecreatefrompng($wartermark);
$imgw = $width;
$imgh = $width*$texth/$textw;
$y = ($height-$texth)/2;
if(function_exists(imagecopyresampled)){
imagecopyresampled($thumbimg,$mark,0,$y,0,0, $imgw,$imgh, $textw,$texth);
}else{
imagecopyresized($thumbimg,$mark,0,$y,0,0,$imgw,$imgh, $textw,$texth);
}
imagedestroy($mark);
}
/*水印结束*/
/*if('gif'==$type || 'png'==$type) {
//imagealphablending($thumbimg, false);//取消默认的混色模式
//imagesavealpha($thumbimg,true);//设定保存完整的 alpha 通道信息
$background_color = imagecolorallocate($thumbimg, 0,255,0);
// 指派一个绿色
imagecolortransparent($thumbimg,$background_color);
// 设置为透明色，若注释掉该行则输出绿色的图
}*/
// 对jpeg图形设置隔行扫描
if('jpg'==$type || 'jpeg'==$type) imageinterlace($thumbimg,$interlace);
// 生成图片
//$imagefun = 'image'.($type=='jpg'?'jpeg':$type);
$imagefun = 'imagepng';
$filename = empty($filename)? substr($image,0,strrpos($image, '.')).$suffix.'.'.$type : $filename;
$imagefun($thumbimg,$filename);
imagedestroy($thumbimg);
return $filename;
}
return false;
}
/**
+----------------------------------------------------------
* 生成缩略图
*
+----------------------------------------------------------
* @static
* @access public
+----------------------------------------------------------
* @param string $image 原图
* @param string $type 图像格式
* @param string $filename 缩略图文件名
* @param string $maxwidth 宽度
* @param string $maxheight 高度
* @param string $position 缩略图保存目录
* @param boolean $interlace 启用隔行扫描
+----------------------------------------------------------
* @return void
+----------------------------------------------------------
* @throws thinkexecption
+----------------------------------------------------------
*/
//2007/7/18 添加水印缩略图
function thumb($image,$type='',$filename='',$maxwidth=200,$maxheight=50,$wartermark='',$interlace=true,$suffix='_thumb')
{
// 获取原图信息
$info = image::getimageinfo($image);
if($info !== false) {
$srcwidth = $info['width'];
$srcheight = $info['height'];
$pathinfo = pathinfo($image);
$type = $pathinfo['extension'];
$type = empty($type)?$info['type']:$type;
$type = strtolower($type);
$interlace = $interlace? 1:0;
unset($info);
$scale = min($maxwidth/$srcwidth, $maxheight/$srcheight); // 计算缩放比例
// 缩略图尺寸
$width = (int)($srcwidth*$scale);
$height = (int)($srcheight*$scale);
// 载入原图
$createfun = 'imagecreatefrom'.($type=='jpg'?'jpeg':$type);
$srcimg = $createfun($image);
//创建缩略图
if($type!='gif' && function_exists('imagecreatetruecolor'))
$thumbimg = imagecreatetruecolor($width, $height);
else
$thumbimg = imagecreate($width, $height);
// 新建png缩略图通道透明处理
if('png'==$type) {
imagealphablending($thumbimg, false);//取消默认的混色模式
imagesavealpha($thumbimg,true);//设定保存完整的 alpha 通道信息
}elseif('gif'==$type) {
// 新建gif缩略图预处理，保证透明效果不失效
$background_color = imagecolorallocate($thumbimg, 0,255,0); // 指派一个绿色
imagecolortransparent($thumbimg,$background_color); // 设置为透明色，若注释掉该行则输出绿色的图
}
// 复制图片
if(function_exists(imagecopyresampled))
imagecopyresampled($thumbimg, $srcimg, 0, 0, 0, 0, $width, $height, $srcwidth,$srcheight);
else
imagecopyresized($thumbimg, $srcimg, 0, 0, 0, 0, $width, $height, $srcwidth,$srcheight);
imagedestroy($srcimg);
/*
//水印开始
//计算水印的位置,默认居中
$textinfo = image::getimageinfo($wartermark);
$textw = $textinfo[width];
$texth = $textinfo[height];
unset($textinfo);
$mark = imagecreatefrompng($wartermark);
$imgw = $width;
$imgh = $width*$texth/$textw;
$y = ($height-$texth)/2;
if(function_exists(imagecopyresampled)){
imagecopyresampled($thumbimg,$mark,0,$y,0,0, $imgw,$imgh, $textw,$texth);
}else{
imagecopyresized($thumbimg,$mark,0,$y,0,0,$imgw,$imgh, $textw,$texth);
}
imagedestroy($mark);
//水印结束
*/
/*if('gif'==$type || 'png'==$type) {
imagealphablending($thumbimg, false);//取消默认的混色模式
imagesavealpha($thumbimg,true);//设定保存完整的 alpha 通道信息
$background_color = imagecolorallocate($thumbimg, 0,255,0);// 指派一个绿色
imagecolortransparent($thumbimg,$background_color);// 设置为透明色，若注释掉该行则输出绿色的图
}*/
if('jpg'==$type || 'jpeg'==$type) {
imageinterlace($thumbimg,$interlace);// 对jpeg图形设置隔行扫描
}
//&nbs