實作縮圖與加浮水印的php類

/**
 * 圖片縮放水印類
 *
 * @version 1.0 ;
 *
*/
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))
 {
 foreach ($arg as $k =>$v )
 {
 if(in_array($k,$params))
 {
 $this->$k = $v;
 }
 }
 }
 else
 {
 if(empty($val))
 {
 return false;
 }
 else
 {
 if(in_array($arg,$array($arg,$ 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->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')
 {
 $srcext = 'jpeg';
 }
if !in_array($srcext,$this->format))return false;
 //尺寸
 $src_width = MagickGetImageWidth($magic_water_handle);
 $src_height = MagickhandImage_Height( 🎜> //裁切縮放模式
 if($mode == 1)
 {
 $pos_x=$pos_y = 0;//裁切臨時位置
 $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)
 {
 $hewid/$dst $dst_width/$dst_height;
 $pos_x = ($src_width-$src_widthc)/2;

 }
 else
 {
 $ssrc; dst_width;
 $pos_y = ($src_height-$src_heightc)/2;
 }
 MagickCropImage($magic_water_handle,$src_widthc,$src_heightc,$pos_heightc,$ //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);
 //縮放->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 /$src_height;
 }
 $this->magick_handle=$magic_water_handle;//替換
 MagickScaleImage($this->magick_handle, $dst_width, $dst_height);//縮放
 }
 //縮放填充模式
 > if($mode == 3)
 {
 if($src_width/$src_height>$dst_width/$dst_height)
 {
 $dst_heightc=$dst_width 🎜> $dst_widthc=$dst_width;
 }
 else
 {
 $dst_widthc=$dst_height*$src_width/$src_height;widthc=$dst_height*$src_width/$src_height; MagickScaleImage($magic_water_handle, $dst_widthc, $dst_heightc);//縮放
 $this->magick_handle = NewMagickWand();
 MagickNewImage($this->dwick_handle,$d_NewImage($d_NewImage($this-stick_handle,$st_p. Smallpic_bgcolor);
 MagickSetFormat($this->magick_handle,$srcext);
 MagickCompositeImage($this->magick_handle,$magic_water_handle,MW_OverCompositeOp,($dst_width-$ ) )/2);
 }
 //打浮水印
 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
/ {
 $this->magick_handle = NewMagickWand();
 if (!MagickReadImage($this->magick_handle, $src_file)> return false;
 $this->set_mark();
 if(empty($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;
 }

 ** $dst_file;
 }

 ** */
 protected function set_mark()
 {

 //
 $dst_width = MagickGetImageWidth($this->magick_handle); $dst_height_ Magic ) );
 //處理浮水印圖
 if ($this->water_mark && is_file($this->water_mark))
 {
 $magic_water_handle = NewMagickWand();
 MagicRemImage( $ magic_water_handle);
 if (MagickReadImage($magic_water_handle, $this->water_mark))
 {
 MagickScaleImage($magic_water_handle, $dst_wid*$this-fidth*$this-did*$th. 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 )
 $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)
 {
 $
 $ = $ this->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 -$this->padding-MagickGetImageHeight($magic_water_height -$this->padding-MagickGetImageHeight($magic_water_handle);water_mark_pos == 5)
 {
 $left = ($dst_width-MagickGetImageWidth($ magic_water_handle))/2;
 $top =($dst_height -MagickGetImageHeight( 2;
 }
 MagickCompositeImage($this->magick_handle,$magic_water_handle,MW_OverCompositeOp,$left,$頂部);
 }
 }
 }
 }
 >
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