將圖片儲存為不同規格的圖片的php程式碼

/**
圖片處理類別
*/
class imagecls
{
 / **
 * 文件資訊
*/
 var $file = array();
 /**
 * 保存目錄
*/
 var $dir = '';
 /**
 * 錯誤代碼
*/
 var $error_code = 0;
 /**
 * 檔案上傳最大KB
*/
 var $max_size = -1;
 function es_imagecls()
 {
 }

 蕨函數checkSize($size)
 {
 return !($size > $this->max_size) || (-1 == $this->max_size);
 }

 /**
 * 處理上傳檔案
 * @param array $file 上傳的檔案
 * @param string $dir 儲存的目錄
 * @return bool
*/
 function init($file, $dir = 'temp')
 {
 if(!is_array($file) || 空($file) || !$this->isUploadFile($file['tmp_name']) || trim($file['name']) == ' ' || $file['size'] == 0)
 {
 $this->file = array();
 $this->error_code = -1;
 回傳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';  //相對
 $file['local_target'] = APP_ROOT_PATH."public/".$file['file_dir'].'/'.$file['prefix'].'.jpg';//物理
 $this->file = &$file;
 $this->error_code = 0;
 return true;
 }
}
 ;/* *
* 儲存檔案
* @return bool
*/
函數save()
{
 if(empty($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;
 回傳true;
 }
 回傳false;
 }
 }
 回傳false
 /**
 * 取得錯誤代碼
 * @return number
*/
 函數error()
 {
 return $this->error_code;
 }
  /**
 * 取得檔案副檔名
 * @return string
*/
 function fileExt($file_name)
 {
 return addslashes(strtolower(substr(strrchr($file_name, '.'), 1, 10))) ;
 }
 /**
 * 根據副檔名判斷檔案是否為圖片
 * @param string $ext 副檔名
 * @return bool
*/
 function isImageExt($ext)
 {
 static $img_ext = array('jpg', ' jpeg ', 'png', 'bmp','gif', 'giff');
 回傳 in_array($ext, $img_ext) ? 1 : 0;
 }
 /**
 * 取得映像資訊
 * @param string $target 檔案路徑
 * @return mixed
*/
 function getImageInfo($target)
 {
 $ext = es_imagecls::fileExt(> {
 $ext = es_imagecls::fileExt(> {
 $ext = es_imagecls::fileExt( $target);
 $is_image = es_imagecls::isImageExt($ext) ;
 if(!$is_image)
 return false;
 elseif(!is_read($is_read ) target))
 回傳false;
 elseif($image_info = @getimagesize($target))
 {
 列表($width, $height, $type) = !empty($image_info) ? $image_info :
 array('', '', '');
 $size = $width * $height;
 if($is_image && !in_array($type, array(1,2, 3,6,13)))
回傳false;
 $image_info['type'] =
 strtolower (substr(image_type_to_extension($image_info[2]),1) );
 return $image_info;
 }
 else
 return false;
 }
 /**
 * 取得是否充值上傳檔案
 * @param string $source 檔案路徑
 * @return bool
*/
 functionisloadFile ($source) { return $source && ($source != 'none') &&  (is_uploaded_file($source) || is_uploaded_file (str_replace('\', '', $source) )); }
 /**
 * 取得已儲存的路徑
 * @param string $dir 指定的保存目錄
 * @return string
*/
 function getTargetDir($dir)
 {
 if (!is_dir(APP_ROOT_PATH."public/".$dir)) {
 @mkdir(APP_ROOT_PATH." public/".$dir);
 @chmod(APP_ROOT_PATH."public/".$dir, 0777);
 }
 return $dir;
 }
  /**
 * 儲存檔案
 * @param string $source 來源檔案路徑
 * @param string $target 目錄檔案路徑
 * @return bool
*/
 原生函式saveFile($source, $target)
 {
 if(!es_imagecls::isUploadFile($source ) ))
 $succeed = false;
 elseif(@copy($source, $target))
 $succeed = true;
 elseif(function_exists('move_uploaded_file') &  $成功= true;
 elseif (@is_read($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);
 $succeed = true;
 } p >
 if($succeed)
 {
 $this->error_code = 0;
 @chmod($target, 0644);
 @unlink($source);
 }
 else
 {
 $this->error_code = 0;
 }
 回傳$succeed;
 }
 回傳$succeed;
 }
公用函數拇指($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'] ;
 $交錯= $交錯？設定($info);
 if($maxWidth > 0 && $maxHeight > 0)
 $scale = min($maxWidth/$srcWidth, $maxHeight/$srcHeight);
 // 計算縮放比例
 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)
 {
 // 超過原圖大小不再縮略
 $width = $srcWidth;
 $height = $srcHeight;
 if(!$is_preview)
 {
 //非預覽模式寫入原圖
 file_put_contents($thumbname,file_get_contents($image));    //用原圖寫入
 return array('url'=>$thumburl,'path'=>$thumbname);
 }
 }
 else
 {
 / / 最大尺寸
 $width = (int)($srcWidth*$scale);
 $height = (int)($srcHeight*$scale);
 }

 if($ gen == 1)
 {
 $width = $maxWidth;
 $height = $maxHeight; }
 // 載入原圖
 $createFun = 'imagecreatefrom'.($type=='jpg'?'jpeg':$type);
 if(!function_exists( $createFun))
 $createFun = 'imagecreatefromjpeg';
 $srcImg = $createFun($image);
 // 建立每個
 if($type!='gif' && function_exists('imagecreatetruecolor'))
 $thumbImg = imagecreatetruecolor($width, $height);
 else
 $thumbImg = idage,$3, $.高度);
 $x = 0;
 $y = 0;
 if($gen == 1 && $maxWidth > 0 && $ maxHeight > 0)
 {
 $resize_ratio = $maxWidth/$maxHeight;
 $src_ratio = $srcWidth/$srcHeight;
 if($src_ratio >= $resize_ratio >= $hresize > $x = ($srcWidth - ($resize_ratio * $srcHeight)) / 2;
 $width = ($height * $srcWidth) / $srcHeight;
 }
 else
 {
 $y = ($srcHeight - ( (1 / $resize_ratio) * $srcWidth)) / 2;
 $height = ($width * $srcHeight) / $srcWidth;
 }
 } p>
 // 複製圖片
 if(function_exists("imagecopyresampled"))
 imagecopyresampled($thumbImg, $srcImg, 0, 0, $x, $y, $height, $height, $height ,
 $srcWidth,$srcHeight);
 else
 imagecopyresized($thumbImg, $srcImg, 0, 0, $x, $y, $width, $height,
 $srcWidight );
 if('gif'==$type || 'png'==$type) {
 $background_color = imagecolorallocate($thumbImg, 0,255,0);  // 指派一個綠色
 imagecolortransparent($thumbImg,$background_color);
 // 設定為透明顏色，註解若掉該行則輸出綠色的圖
 }
 // 對jpeg圖形設定隔行掃描
 if('jpg' ==$type || 'jpeg'==$type)
 imageinterlace($thumbImg,$interlace);
  // 產生圖片
 imagejpeg($thumbImg,$thumbname ,100);
 imagedestroy($thumbImg);
 imagedestroy($srcImg);
 return array('url'=>$thumburl,'path'=>$thumbname=>$thumbname=>$thumbname=>$thumbname=$ );
 }
 return false;
 }
 公用函數make_thumb($srcImg,$srcWidth,$srcHeight,$type,$maxWidth=200,$srcWidth,$srcHeight,$type,$maxWidth=200,
 $maxHeight=50,$gen = 0)
 {
 $交錯= $交錯？ && $maxHeight > 0)
 $scale = min($maxWidth/$srcWidth, $maxHeight/$srcHeight);
 // 計算縮放比例
 elseif($maxWidth == 0)
 $
 elseif($maxWidth == 0)
 $
 $縮放= $maxHeight/$srcHeight;
 elseif($maxHeight == 0)
 $scale = $maxWidth/$srcWidth;
 ;            if($scale >= 1)
 {
 // 超過原圖大小不再縮略
 $width = $srcWidth;
 $height = $srcHeight;
 }
 else
 {
 // 最重要的尺寸
 $width = (int)($srcWidth*$scale);
 $height = (int)($srcHeight*$scale);
 }
 if($gen == 1)
 {
 $width = $maxWidth;
 $height = $maxHeight;
 }

 / /創建大概
 if($type!='gif' && function_exists('imagecreatetruecolor'))
 $thumbImg = imagecreatetruecolor($width, $height); else
 $thumbImg = imagecreatetruecolor ($寬度, $高度);
 $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) / $srcHeightth);
 }
 else
 {
 $y = ($srcHeight - ( (1 / $resize_ratio) * $srcWidth)) / 2;
 $height = ($width * $srcHeight) * $srcHeight) / $srcWidth;
 }
 }
 // 複製圖片
 if(function_exists("imagecopyresampled"))
 imagecopyresampled($thumbImg, $srcImg, 0, 0, $x, $ $height,
 $srcWidth,$srcHeight);
 else
 imagecopyresized($thumbImg, $srcImg, 0, 0, $x, $y, $width, $height,  if('gif'==$type || 'png'==$type) {
 $background_color = imagecolorallocate($thumbImg, 255,255,255);
 // 指派一個綠色
 imagecolortransparent($thumbImg,$background_color);
 // 設定為透明色，若註解掉該行則輸出綠色的圖
 }
 // 對jpeg圖形設定隔行掃描
 if('jpg'==$type || 'jpeg'==$type)
 imageinterlace($thumbImg,$interlace);
 return $thumbImg ;

 }

 public function water($source,$water,$alpha=80,$position="0")
 {
 //檢查檔案是否存在
 if(!file_exists($source)||!file_exists($water))
 return false;
 //圖片資訊
 $ sInfo = es_imagecls::getImageInfo($source);
 $wInfo = es_imagecls::getImageInfo($water);
 //如果圖片小於水印圖片，則不產生圖片
 if($sInfo["0"]  return false;


 if(is_animated_gif($source))
 {
 require_once APP_ROOT_PATH."system/utils/gif_encoder.php";
 require_onceAPPAPP APP_/ ;
 $gif = new GIFReader();
 $gif->load($source);
 foreach($gif->IMGS['frames'] as $k =>$img)
 {
 $im = imagecreatefromstring($gif->getgif($k));
 //為im加水印
 $sImage=$im;
 $ wCreateFun="imagecreatefrom".$wInfo['type'];
 if(!function_exists($wCreateFun))
 $wCreateFun = 'imagecreatefromjpeg'; $wImage 🎜>
 //設定影像的混色模式
 imagealphablending($wImage, true);
 switch (intval($position))
 {
 case 0: break;
 //左上
 case 1:
 $posY=0;
 $posX=0;
 //產生混合影像
 imagecopymerge($sImage, $wImage, $posX, $posY, 0, 0, $wInfo[0],$wInfo[1],$alpha);
 break;
 //右上
 case 2:
 $posY=0;
 $posX =$sInfo[0]-$wInfo[0];
 //產生混合映像
 imagecopymerge($sImage, $wImage, $posX, $posY, 0, 0, $wInfo[0],$wInfo [1],$alpha);
 break;
 //左下
 case 3:
 $posY=$sInfo[1]-$wInfo[1];
 $posX=0 ;
 //產生混合映像
 imagecopymerge($sImage, $wImage, $posX, $posY, 0, 0, $wInfo[0],$wInfo[1],$alpha);
 break ;
 //右下
 case 4:
 $posY=$sInfo[1]-$wInfo[1];
 $posX=$sInfo[0]-$wInfo[0];
 //產生混合映像
 imagecopymerge($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-$wInfo [0]/2;
 //產生混合映像
 imagecopymerge($sImage, $wImage, $posX, $posY, 0, 0, $wInfo[0],$wInfo[1],$alpha) ;
 break;
 }
 //end im加浮水印


 ob_start();
 imagegif($sImage);
 $content = ob_get_contents() ;
 ob_end_clean();
 $frames [ ] = $content;
 $framed [ ] = $img['frameDelay'];
 }


 $gif_？ = new GIFEncoder (
 $frames,
 $framed,
 0,
 2,
 0, 0, 0,
 "bin" //bin為二進位url為位址
 );
 $image_rs = $gif_maker->GetAnimation ( );

 //如果沒有給出保存檔名，預設為原始圖像名稱
 @unlink($source);
 //儲存圖片
 file_put_contents($source,$image_rs);
 return true;
 }

 //建立映像
 $sCreateFun="imagecreatefrom".$sInfo['type'];
 if(!function_exists($sCreateFun))
 $sCreateFunfimage;
 $sImage=$sCreateFun($source);
 $wCreateFun="imagecreatefrom".$wInfo['type'];
 if(!function_exists($wCreateFun))
 $wCreateFun = 'imagecreatefromjpeg';
 $wImage=$wCreateFun($water);
 //設定影像的混色模式
 imagealphablending(truewImage, true );
 switch (intval($position))
 {
 case 0: break;
 //左上
 case 1:
 $posY= 0;
 $posX=0;
 //產生混合圖片
 imagecopymerge($sImage, $wImage, $posX, $posY, 0, 0, $wInfo[0],$wInfo[1] ,$alpha);
 break;
 //右邊
 case 2:
 $posY=0;
 $posX=$sInfo[0]-$wInfo[0];
 //產生混合圖
 imagecopymerge($sImage, $wImage, $posX, $posY, 0, 0, $wInfo[0],$wInfo[1],$alpha);
 break;
 //左下
 case 3:
 $posY=$sInfo[1]-$wInfo[1];
 $posX=0;
 //產生混合圖
 imagecopymerge($ sImage, $wImage, $posX, $posY, 0, 0, $wInfo[0],$wInfo[1],$alpha);
 break;
 //右邊
 case 4:
 $posY=$sInfo[1]-$wInfo[1];
 $posX=$sInfo[0]-$wInfo[0];
 //產生混合圖片
 imagecopymerge($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-$wInfo[0]/2;
 //產生混合映像
 imagecopymerge($sImage, $wImage, $posX, $posY, 0, 0, $wInfo[0],$wInfo[1],$alpha);
 break;
 }
 //若沒有給予儲存檔名，預設為原始圖片名稱
 @unlink($source);
 //儲存圖片
 imagejpeg($sImage,$source,100) ;
 imagedestroy($sImage);
 }
}
if(!function_exists('image_type_to_extension'))
{
 f )
 {
 if(empty($imagetype))
 return false;
 switch($imagetype)
 {
 case IMAGETYPE_G IF: return '. gif';
 case IMAGETYPE_JPEG : return '.jpeg';
 case IMAGETYPE_PNG : return '.png';
 case IMAGETYPE_SWF : return '.png';
 case IMAGETYPE_SWF : return '.swf';
 case IMAGETYPE_SWF : return '。 ;
 case IMAGETYPE_BMP : return '.bmp';
 case IMAGETYPE_TIFF_II : return '.tiff';
 case IMAGETYPE_TIFF_MM : return '.tiff';
 case IMAGETYPE_TIFF_MM : return '.tiff';
 case IMAGETYPE_TIFF_MM : return '.tiff';
 case IMAGETYPE_JP2 : return '.jp2';
 case IMAGETYPE_JPX : return '.jpf';
 case IMAGETYPE_JB2 : return '.jb2';
 case IMAGETYPE_JB2 : return '.jb2';
> case IMAGETYPE_IFF : return '.aiff';
 case IMAGETYPE_WBMP : return '.wbmp';
 case IMAGETYPE_XBM : return '.xbm';
 default : return default; 🎜>}
?>