圖片縮放浮水印PHP類

/**
* 圖片縮放水印類
*
*/
class cls_photo
{
 protected $waterrate = 0.2; //水印圖示在圖片上的比例
 protected $width = 300; //縮圖預設寬度
 protected $height = 200; //縮圖預設高度
 protected $padding = 5; //水印圖到邊的距離
 protected $water_mark = "./water.png";
 protected $water_mark_pos = 5;//水印圖片位置（1=左上角，2=右上角，3=左下角,4=右下角,5中央）
 protected $watermode = 0;// 0縮圖時不打浮水印1縮圖時打水印
 protected $magick_handle;//圖片操作句柄
 protected $format = array ( 'jpg','gif', 'png','jpeg' ); // 圖片檔案格式限定
 protected $smallpic_mode = 2;//預設模式0為不產生縮圖，1為裁切縮放，2為比例縮放3為縮放填滿模式

 /**
 * 設定圖片類別參數
 *
 * @param $arg 圖片參數多次可放入數組裡如下
 * @param $protected 參數值
 * array(
 * 'waterrate'=>0.2,
 * 'water_mark'=>'./water.png',
 * 'water_mark_pos'=>4,
 * 'smallpic_mode'=>1
 * ) ;
 * @return ture/false
*/
 public function set_args ( $arg,$val="" )
 {
 $params = array ( 'waterrate','water_mark', 'water_mark_pos','smallpic_mode','watermode','width','height' );
 if ( is_array ( $arg ) )
 {
 for ( $arg as $k =>$v )
 {
 if ( in_array ( $k,$params ) )
 {
 $this->$k = $v;
 }
 }
 }
 else
 {
 if ( empty ( $val ) )
 {
 return false;
 }
 else
 {
 if ( in_array ( $arg_array ($. params ) )
 {
 $this->$arg = $val;
 }
 }
 }
 return true;
 }

 /* *
 * 圖片縮放
 *
 * @param $src_file 來源檔案路徑
 * @param $dst_file 目標檔案路徑
 * @return 縮寫圖片路徑/false
*/
 public function scale ( $src_file,$dst_file="" )
 {
 $dst_width = $this->width;
 $dst_height = $this-this>height;
 $mode = $this->smallpic_mode;
 $magic_water_handle = NewMagickWand();
 if ( !MagickReadImage ( $magic_water_handle, $src_file ) ) return false;
 $srcext = strtolower ( MagickGetImageFormat ( $magic_water_handle ) );
 if ( $srcext=='bmp' )
 {
 $srcext = 'jpeg'; }format ) ) return false;
 //尺寸
 $src_width = MagickGetImageWidth ( $magic_water_handle );
 $src_heightWidth ( $magic_water_handle );
 $src_heightage = Magic.Imhage); 🎜> //裁切縮放模式
 if ( $mode == 1 )
 {
 $pos_x=$pos_y = 0;//裁切暫存位置
 $src_widthc = $src_width; /裁切臨時寬度
 $src_heightc = $src_height;//裁切臨時高度
 if ( $src_width/$src_height>$dst_width/$dst_height )
 {
 $height🎜 $dst_width/$dst_height;
 $pos_x = ( $src_width-$src_widthc ) /2;

 }
 else
 {
 $wheight dst_width;
 $pos_y = ( $src_height-$src_heightc ) /2;
 }
 MagickCropImage ( $magic_water_handle,$src_widthc,$src_heightc,$pos_water_handle,$src_widthc,$src_heightc,$pos_heightc,$posx,$/pos; //因為MagickCropImage函數後，Gif 影像改，但畫布不變
 $this->magick_handle = NewMagickWand();
 MagickNewImage ( $this->magick_handle,$src_widthc,$src_heffightc,'#ffffight' ) ;
 MagickSetFormat ( $this->magick_handle,$srcext );
 MagickCompositeImage ( $this->magick_handle,$magic_water_handle,MW_OverCompositeOp,0,0 );
 ->magick_handle, $dst_width, $dst_height );

 }
 //比例縮放模式
 if ( $mode == 2 )
 {
 if ( $src_width/$ src_height>$dst_width/$dst_height )
 {
 $dst_height=$dst_width*$src_height/$src_width;
 }
 else }
 $this->magick_handle=$magic_water_handle;//替換
 MagickScaleImage ( $this->magick_handle, $dst_width, $dst_height ); > //縮放填滿模式
 if ( $mode == 3 )
 {
 if ( $src_width/$src_height>$dst_width/$dst_height )
 {
 $dst_height *$src_height/$src_width;
 $dst_widthc=$dst_width;
 }
 else
 {
 $dst_widthc=$dst_height*🎜> {
 $dst_widthc=$dst_height*$src_height* dst_height;
 }
 MagickScaleImage ( $magic_water_handle, $dst_widthc, $dst_heightc );//縮放
 $this->magick_handle = NewMagickWand();
 MagickNewImage ($this-dth_handwidw ->smallpic_bgcolor );
 MagickSetFormat ( $this->magick_handle,$srcext );
 MagickCompositeImage ( $this->magick_handle,$magic_water_handle,MW_OverpositeOp, (Comst_Op. $dst_heightc ) /2 );
 }
 //打水印
 if ( $this->watermode == 1 )
 {
 $this->; set_mark();
 }
 if (empty ( $dst_file ) )
 {
 //建立暫存檔案
 $dst_file = tempnam ( $_SERVER["SINASRV_CACHE_DIR"],"TMP_IMG"]" );
 }
 MagickWriteImage ( $this->magick_handle, $dst_file );
 return $dst_file;
 }

 /**
 * 打浮水印
 *
 * @param $src_file 要打浮水印的圖片路徑
 * @param $dst_file 生產浮水印的檔案儲存路徑，為空則生產隨機暫存檔案
 * @return 浮水印檔案路徑/false
 function water_mark ( $src_file,$dst_file="" )
 {
 $this->magick_handle = NewMagickWand();
 if ( !MagickReadImage ( $this->magick_handle, $src_handle, $src_ ) )  return false;
 $this->set_mark();
 if (empty ( $dst_file ) )
 {
 //建立暫存檔案
 $dst_file = tempnam ( $ _SERVER["SINASRV_CHEDIRDIR "],"TMP_IMG" );
 }
 MagickWriteImage ( $this->magick_handle, $dst_file );
 return $dst_file;
 }

 return $dst_file;
 }

 / protected function set_mark()
 {

 //
 $dst_width = MagickGetImageWidth ( $this->magick_handle ); //處理浮水印圖
 if ( $this->water_mark && is_file ( $this->water_mark ) )
 {
 $magic_water_handle = NewMagickWand();
 MagickoveImage $ magic_water_handle );
 if ( MagickReadImage ( $magic_water_handle, $this->water_mark ) )
 {
 MagickScaleImage ( $magic_water_handle, $dst_width -thisd-wid waterrate *MagickGetImageHeight ( $magic_water_handle ) /MagickGetImageWidth ( $magic_water_handle ) );//將水印縮放到圖片的1/5
 if ( $this->water_mark_pos == 1 )
 if ( $this->water_mark_pos == 1 )
 $ this->padding;
 $top = $this->padding;
 }
 elseif ( $this->water_mark_pos == 2 )
 {
 $left = $dst_width-$ this ->padding-MagickGetImageWidth ( $magic_water_handle );
 $top = $this->padding;
 }
 elseif ( $this ->water_mark_pos == 3 )
 {padding;
 $top = $dst_height -$this->padding-MagickGetImageHeight ( $magic_water_handle );
 }
 elseif ( $this->water_mark_pos == 4 )
 {
 $left = $dst_width-$this->padding-MagickGetImageWidth ( $magic_water_handle );
 $top =$dst_height -$this->padding-MagickGetImageHeight ( $top =$dst_height -$this->padding-MagickGetImageHeight ($sese $. ( $this->water_mark_pos == 5 )
 {
 $left = ( $dst_width-MagickGetImageWidth ( $ magic_water_handle ) ) /2;
 $top = ( $dst_height -MagickGet_He 2 ;
 }
 MagickCompositeImage ( $this->magick_handle,$magic_water_handle,MW_OverCompositeOp,$left,$頂部);
 }
 }
 }
 }
 >
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