$this->max_size) || (-1 == $this->max_size); } /** * 处理上传文件 * @param array $file 上传的文件 * @param string $dir 保存的目录 * @return bool */ function init($file, $dir = 'temp') { if(!is_array($file) || empty($file) || !$this->isuploadfile($file['tmp_name']) || trim($file['name']) == '' || $file['size'] == 0) { $this->file = array(); $this->error_code = -1; return false; } else { $file['size'] = intval($file['size']); $file['name'] = trim($file['name']); $file['thumb'] = ''; $file['ext'] = $this->fileext($file['name']); $file['name'] = htmlspecialchars($file['name'], ent_quotes); $file['is_image'] = $this->isimageext($file['ext']); $file['file_dir'] = $this->gettargetdir($dir); $file['prefix'] = md5(microtime(true)).rand(10,99); $file['target'] = ./public/.$file['file_dir'].'/'.$file['prefix'].'.jpg'; //相对 $file['local_target'] = app_root_path.public/.$file['file_dir'].'/'.$file['prefix'].'.jpg';//物理 $this->file = &$file; $this->error_code = 0; return true; }}/**
* 保存文件* @return bool*/function save(){ if(empty($this->file) || empty($this->file['tmp_name'])) $this->error_code = -101; elseif(!$this->checksize($this->file['size'])) $this->error_code = -105; elseif(!$this->file['is_image']) $this->error_code = -102; elseif(!$this->savefile($this->file['tmp_name'], $this->file['local_target'])) $this->error_code = -103; elseif($this->file['is_image'] && (!$this->file['image_info'] = $this->getimageinfo($this->file['local_target'], true))) { $this->error_code = -104; @unlink($this->file['local_target']); } else { $this->error_code = 0; return true; } return false; } /**
* 获取错误代码 * @return number */ function error() { return $this->error_code; } /**
* 获取文件扩展名 * @return string */ function fileext($file_name) { return addslashes(strtolower(substr(strrchr($file_name, '.'), 1, 10))); } /**
* 根据扩展名判断文件是否为图像 * @param string $ext 扩展名 * @return bool */ function isimageext($ext) { static $img_ext = array('jpg', 'jpeg', 'png', 'bmp','gif','giff'); return in_array($ext, $img_ext) ? 1 : 0; } /**
* 获取图像信息 * @param string $target 文件路径 * @return mixed */ function getimageinfo($target) { $ext = es_imagecls::fileext($target); $is_image = es_imagecls::isimageext($ext); if(!$is_image)
return false; elseif(!is_readable($target)) return false; elseif($image_info = @getimagesize($target)) { list($width, $height, $type) = !empty($image_info) ? $image_info : array('', '', ''); $size = $width * $height; if($is_image && !in_array($type, array(1,2,3,6,13))) return false; $image_info['type'] =
strtolower (substr(image_type_to_extension($image_info[2]),1)); return $image_info; } else return false; } /**
* 获取是否充许上传文件 * @param string $source 文件路径 * @return bool */ function isuploadfile($source) { return $source && ($source != 'none') && (is_uploaded_file($source) || is_uploaded_file(str_replace('\\', '\', $source))); } /**
* 获取保存的路径 * @param string $dir 指定的保存目录 * @return string */ function gettargetdir($dir) { if (!is_dir(app_root_path.public/.$dir)) { @mkdir(app_root_path.public/.$dir); @chmod(app_root_path.public/.$dir, 0777); } return $dir; } /**
* 保存文件 * @param string $source 源文件路径 * @param string $target 目录文件路径 * @return bool */ private function savefile($source, $target) { if(!es_imagecls::isuploadfile($source)) $succeed = false; elseif(@copy($source, $target)) $succeed = true; elseif(function_exists('move_uploaded_file') && @move_uploaded_file($source, $target)) $succeed = true; elseif (@is_readable($source) && (@$fp_s = fopen($source, 'rb')) && (@$fp_t = fopen($target, 'wb'))) { while (!feof($fp_s)) { $s = @fread($fp_s, 1024 * 512); @fwrite($fp_t, $s); } fclose($fp_s); fclose($fp_t); $succeed = true; } if($succeed)
{ $this->error_code = 0; @chmod($target, 0644); @unlink($source); } else { $this->error_code = 0; } return $succeed;
} public function thumb($image,$maxwidth=200,$maxheight=50,$gen = 0,
$interlace=true,$filepath = '',$is_preview = true) { $info = es_imagecls::getimageinfo($image); if($info !== false)
{ $srcwidth = $info[0]; $srcheight = $info[1]; $type = $info['type']; $interlace = $interlace? 1:0;
unset($info); if($maxwidth > 0 && $maxheight > 0)
$scale = min($maxwidth/$srcwidth, $maxheight/$srcheight); // 计算缩放比例 elseif($maxwidth == 0) $scale = $maxheight/$srcheight; elseif($maxheight == 0) $scale = $maxwidth/$srcwidth;
$paths = pathinfo($image); $paths['filename'] = trim(strtolower($paths['basename']), ..strtolower($paths['extension'])); $basefilename = explode(_,$paths['filename']); $basefilename = $basefilename[0]; if(empty($filepath)) { if($is_preview) $thumbname = $paths['dirname'].'/'.$basefilename. '_'.$maxwidth.'x'.$maxheight.'.jpg'; else $thumbname = $paths['dirname'].'/'.$basefilename. 'o_'.$maxwidth.'x'.$maxheight.'.jpg'; } else $thumbname = $filepath; $thumburl = str_replace(app_root_path,'./',$thumbname);
if($scale >= 1) { // 超过原图大小不再缩略 $width = $srcwidth; $height = $srcheight; if(!$is_preview) { //非预览模式写入原图 file_put_contents($thumbname,file_get_contents($image)); //用原图写入 return array('url'=>$thumburl,'path'=>$thumbname); } } else { // 缩略图尺寸 $width = (int)($srcwidth*$scale); $height = (int)($srcheight*$scale); } if($gen == 1) { $width = $maxwidth; $height = $maxheight; } // 载入原图
$createfun = 'imagecreatefrom'.($type=='jpg'?'jpeg':$type); if(!function_exists($createfun)) $createfun = 'imagecreatefromjpeg'; $srcimg = $createfun($image);
//创建缩略图
if($type!='gif' && function_exists('imagecreatetruecolor')) $thumbimg = imagecreatetruecolor($width, $height); else $thumbimg = imagecreate($width, $height); $x = 0;
$y = 0; if($gen == 1 && $maxwidth > 0 && $maxheight > 0)
{ $resize_ratio = $maxwidth/$maxheight; $src_ratio = $srcwidth/$srcheight; if($src_ratio >= $resize_ratio) { $x = ($srcwidth - ($resize_ratio * $srcheight)) / 2; $width = ($height * $srcwidth) / $srcheight; } else { $y = ($srcheight - ( (1 / $resize_ratio) * $srcwidth)) / 2; $height = ($width * $srcheight) / $srcwidth; } } // 复制图片
if(function_exists(imagecopyresampled)) imagecopyresampled($thumbimg, $srcimg, 0, 0, $x, $y, $width, $height, $srcwidth,$srcheight); else imagecopyresized($thumbimg, $srcimg, 0, 0, $x, $y, $width, $height, $srcwidth,$srcheight); if('gif'==$type || 'png'==$type) { $background_color = imagecolorallocate($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
imagejpeg($thumbimg,$thumbname,100); imagedestroy($thumbimg); imagedestroy($srcimg); return array('url'=>$thumburl,'path'=>$thumbname);
} return false; } public function make_thumb($srcimg,$srcwidth,$srcheight,$type,$maxwidth=200,
$maxheight=50,$gen = 0) { $interlace = $interlace? 1:0;
if($maxwidth > 0 && $maxheight > 0)
$scale = min($maxwidth/$srcwidth, $maxheight/$srcheight); // 计算缩放比例 elseif($maxwidth == 0) $scale = $maxheight/$srcheight; elseif($maxheight == 0) $scale = $maxwidth/$srcwidth; if($scale >= 1)
{ // 超过原图大小不再缩略 $width = $srcwidth; $height = $srcheight; } else { // 缩略图尺寸 $width = (int)($srcwidth*$scale); $height = (int)($srcheight*$scale); } if($gen == 1)
{ $width = $maxwidth; $height = $maxheight; }
//创建缩略图 if($type!='gif' && function_exists('imagecreatetruecolor')) $thumbimg = imagecreatetruecolor($width, $height); else $thumbimg = imagecreatetruecolor($width, $height); $x = 0;
$y = 0; if($gen == 1 && $maxwidth > 0 && $maxheight > 0)
{ $resize_ratio = $maxwidth/$maxheight; $src_ratio = $srcwidth/$srcheight; if($src_ratio >= $resize_ratio) { $x = ($srcwidth - ($resize_ratio * $srcheight)) / 2; $width = ($height * $srcwidth) / $srcheight; } else { $y = ($srcheight - ( (1 / $resize_ratio) * $srcwidth)) / 2; $height = ($width * $srcheight) / $srcwidth; } } // 复制图片
if(function_exists(imagecopyresampled)) imagecopyresampled($thumbimg, $srcimg, 0, 0, $x, $y, $width, $height, $srcwidth,$srcheight); else imagecopyresized($thumbimg, $srcimg, 0, 0, $x, $y, $width, $height, $srcwidth,$srcheight); if('gif'==$type || 'png'==$type) { $background_color = imagecolorallocate($thumbimg, 255,255,255); // 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); return $thumbimg;
}
public function water($source,$water,$alpha=80,$position=0) { //检查文件是否存在 if(!file_exists($source)||!file_exists($water)) return false; //图片信息
$sinfo = es_imagecls::getimageinfo($source); $winfo = es_imagecls::getimageinfo($water); //如果图片小于水印图片，不生成图片
if($sinfo[0] return false;
if(is_animated_gif($source)) { require_once app_root_path.system/utils/gif_encoder.php; require_once app_root_path.system/utils/gif_reader.php; $gif = new gifreader();
$gif->load($source); foreach($gif->imgs['frames'] as $k=>$img) { $im = imagecreatefromstring($gif->getgif($k)); //为im加水印 $simage=$im; $wcreatefun=imagecreatefrom.$winfo['type']; if(!function_exists($wcreatefun)) $wcreatefun = 'imagecreatefromjpeg'; $wimage=$wcreatefun($water); //设定图像的混色模式 imagealphablending($wimage, true); switch (intval($position)) { case 0: break; //左上 case 1: $posy=0; $posx=0; //生成混合图像 imagecopymerge($simage, $wimage, $posx, $posy, 0, 0, $winfo[0],$winfo[1],$alpha); break; //右上 case 2: $posy=0; $posx=$sinfo[0]-$winfo[0]; //生成混合图像 imagecopymerge($simage, $wimage, $posx, $posy, 0, 0, $winfo[0],$winfo[1],$alpha); break; //左下 case 3: $posy=$sinfo[1]-$winfo[1]; $posx=0; //生成混合图像 imagecopymerge($simage, $wimage, $posx, $posy, 0, 0, $winfo[0],$winfo[1],$alpha); break; //右下 case 4: $posy=$sinfo[1]-$winfo[1]; $posx=$sinfo[0]-$winfo[0]; //生成混合图像 imagecopymerge($simage, $wimage, $posx, $posy, 0, 0, $winfo[0],$winfo[1],$alpha); break; //居中 case 5: $posy=$sinfo[1]/2-$winfo[1]/2; $posx=$sinfo[0]/2-$winfo[0]/2; //生成混合图像 imagecopymerge($simage, $wimage, $posx, $posy, 0, 0, $winfo[0],$winfo[1],$alpha); break; } //end im加水印 ob_start(); imagegif($simage); $content = ob_get_contents(); ob_end_clean(); $frames [ ] = $content; $framed [ ] = $img['framedelay']; } $gif_maker = new gifencoder ( $frames, $framed, 0, 2, 0, 0, 0, bin //bin为二进制 url为地址 ); $image_rs = $gif_maker->getanimation ( ); //如果没有给出保存文件名，默认为原图像名 @unlink($source); //保存图像 file_put_contents($source,$image_rs); return true; } //建立图像 $screatefun=imagecreatefrom.$sinfo['type']; if(!function_exists($screatefun)) $screatefun = 'imagecreatefromjpeg'; $simage=$screatefun($source); $wcreatefun=imagecreatefrom.$winfo['type'];
if(!function_exists($wcreatefun)) $wcreatefun = 'imagecreatefromjpeg'; $wimage=$wcreatefun($water); //设定图像的混色模式
imagealphablending($wimage, true); switch (intval($position))
{ case 0: break; //左上 case 1: $posy=0; $posx=0; //生成混合图像 imagecopymerge($simage, $wimage, $posx, $posy, 0, 0, $winfo[0],$winfo[1],$alpha); break; //右上 case 2: $posy=0; $posx=$sinfo[0]-$winfo[0]; //生成混合图像 imagecopymerge($simage, $wimage, $posx, $posy, 0, 0, $winfo[0],$winfo[1],$alpha); break; //左下 case 3: $posy=$sinfo[1]-$winfo[1]; $posx=0; //生成混合图像 imagecopymerge($simage, $wimage, $posx, $posy, 0, 0, $winfo[0],$winfo[1],$alpha); break; //右下 case 4: $posy=$sinfo[1]-$winfo[1]; $posx=$sinfo[0]-$winfo[0]; //生成混合图像 imagecopymerge($simage, $wimage, $posx, $posy, 0, 0, $winfo[0],$winfo[1],$alpha); break; //居中 case 5: $posy=$sinfo[1]/2-$winfo[1]/2; $posx=$sinfo[0]/2-$winfo[0]/2; //生成混合图像 imagecopymerge($simage, $wimage, $posx, $posy, 0, 0, $winfo[0],$winfo[1],$alpha); break; } //如果没有给出保存文件名，默认为原图像名
@unlink($source); //保存图像 imagejpeg($simage,$source,100); imagedestroy($simage); }}if(!function_exists('image_type_to_extension'))
{ function image_type_to_extension($imagetype) { if(empty($imagetype)) return false; switch($imagetype)
{ case imagetype_gif : return '.gif'; case imagetype_jpeg : return '.jpeg'; case imagetype_png : return '.png'; case imagetype_swf : return '.swf'; case imagetype_psd : return '.psd'; case imagetype_bmp : return '.bmp'; case imagetype_tiff_ii : return '.tiff'; case imagetype_tiff_mm : return '.tiff'; case imagetype_jpc : return '.jpc'; case imagetype_jp2 : return '.jp2'; case imagetype_jpx : return '.jpf'; case imagetype_jb2 : return '.jb2'; case imagetype_swc : return '.swc'; case imagetype_iff : return '.aiff'; case imagetype_wbmp : return '.wbmp'; case imagetype_xbm : return '.xbm'; default : return false; } }}?>
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2.get_spec_img()调用图片类,然后再用下面的方法保存不同规格的图片并返回图片连接
thumb($img_path,$width,$height,$gen,true, ,$is_preview); if(app_conf(public_domain_root)!='') { $paths = pathinfo($new_path); $path = str_replace(./,,$paths['dirname']); $filename = $paths['basename']; $pathwithoupublic = str_replace(public/,,$path); $file_data = @file_get_contents($path.$file);　 　 $img = @imagecreatefromstring($file_data);　 　 if($img!==false)　 　 {　 　 　 $save_path = public/.$path;　 　 　 if(!is_dir($save_path))　 　 　 {　 　 　 　 @mk_dir($save_path);　 　 　 　 　 　 }　 　 　 @file_put_contents($save_path.$name,$file_data);　 　 } } } } return $new_path;}
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3.使用方法:
//im:将店铺图片保存为3种规格:小图:48x48,中图120x120,大图200x200$small_url=get_spec_image($data['image'],48,48,0);$middle_url=get_spec_image($data['image'],120,120,0);$big_url=get_spec_image($data['image'],200,200,0);
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