php實現的通用圖片處理類_php技巧

本文執行個體講述了php實現的通用圖片處理類。分享給大家供大家參考。具體如下：

該圖片處理函數功能：縮放、剪下、相框、浮水印、銳利化、旋轉、翻轉、透明度、反色，處理並儲存記錄的思路：當有圖片有改動時自動產生一張新圖片，命名方式可以考慮在原圖片的基礎上加上步驟，例如：圖片名稱+__第幾步。 在一些需要圖片進階處理功能的Web應用中，可以參考這個類。

<?phpclass picture{  var $PICTURE_URL;//要處理的圖片  var $DEST_URL="temp__01.jpg";//產生靶心圖表片位置  var $PICTURE_CREATE;//要建立的圖片  var $TURE_COLOR;//建立一個真彩圖象  var $PICTURE_WIDTH;//原圖片寬度  var $PICTURE_HEIGHT;//原圖片高度/*浮水印的類型，預設的為浮水印文字*/  var $MARK_TYPE=1;  var $WORD;//經過UTF-8後的文字  var $WORD_X;//文字橫座標  var $WORD_Y;//文字縱座標  var $FONT_TYPE;//字型類型  var $FONT_SIZE="12";//字型大小  var $FONT_WORD;//文字  var $ANGLE=0;//文字的角度，預設為0  var $FONT_COLOR="#000000";//文字顏色  var $FONT_PATH="font/simkai.ttf";//字型庫，預設為宋體  var $FORCE_URL;//浮水印圖片  var $FORCE_X=0;//浮水印橫座標  var $FORCE_Y=0;//浮水印縱座標  var $FORCE_START_X=0;//切起浮水印的圖片橫座標  var $FORCE_START_Y=0;//切起浮水印的圖片縱座標  var $PICTURE_TYPE;//圖片類型  var $PICTURE_MIME;//輸出的頭部/*縮放比例為1的話就按縮放高度和寬度縮放*/  var $ZOOM=1;//縮放類型  var $ZOOM_MULTIPLE;//縮放比例  var $ZOOM_WIDTH;//縮放寬度  var $ZOOM_HEIGHT;//縮放高度/*裁切，按比例和固定長度、寬度*/  var $CUT_TYPE=1;//裁切類型  var $CUT_X=0;//裁切的橫座標  var $CUT_Y=0;//裁切的縱座標  var $CUT_;//裁切的寬度  var $CUT_HEIGHT=100;//裁切的高度/*銳利化*/  var $SHARP="7.0";//銳利化程度/*透明度處理*/  var $ALPHA='100';//透明度在0-127之間  var $ALPHA_X="90";  var $ALPHA_Y="50";/*任意角度旋轉*/  var $CIRCUMROTATE="90.0";//注意，必須為浮點數/*出錯資訊*/  var $ERROR=array(    'unalviable'=>'沒有找到相關圖片!'  );/*建構函式：函數初始化*/  function __construct($PICTURE_URL)  {    $this->get_info($PICTURE_URL);  }  function get_info($PICTURE_URL)  {    /*    處理原圖片的資訊,先檢測圖片是否存在,不存在則給出相應的資訊    */    @$SIZE=getimagesize($PICTURE_URL);    if(!$SIZE)    {      exit($this->ERROR['unalviable']);    }    //得到原圖片的資訊類型、寬度、高度    $this->PICTURE_MIME=$SIZE['mime'];    $this->PICTURE_;    $this->PICTURE_HEIGHT=$SIZE[1];    //建立圖片    switch($SIZE[2])    {      case 1:        $this->PICTURE_CREATE=imagecreatefromgif($PICTURE_URL);        $this->PICTURE_TYPE="imagejpeg";        $this->PICTURE_EXT="jpg";        break;      case 2:        $this->PICTURE_CREATE=imagecreatefromjpeg($PICTURE_URL);        $this->PICTURE_TYPE="imagegif";        $this->PICTURE_EXT="gif";        break;      case 3:        $this->PICTURE_CREATE=imagecreatefrompng($PICTURE_URL);        $this->PICTURE_TYPE="imagepng";        $this->PICTURE_EXT="png";        break;    }     /*    文字色彩轉換16進位轉換成10進位    */    preg_match_all("/([0-f]){2,2}/i",$this->FONT_COLOR,$MATCHES);    if(count($MATCHES)==3)    {      $this->RED=hexdec($MATCHES[0][0]);      $this->GREEN=hexdec($MATCHES[0][1]);      $this->BLUE=hexdec($MATCHES[0][2]);    }  }  //end of __construct  /*  將16進位的色彩轉換成10進位的（R，G，B）  */  function hex2dec()  {    preg_match_all("/([0-f]){2,2}/i",$this->FONT_COLOR,$MATCHES);    if(count($MATCHES)==3)    {      $this->RED=hexdec($MATCHES[0][0]);      $this->GREEN=hexdec($MATCHES[0][1]);      $this->BLUE=hexdec($MATCHES[0][2]);    }  }  //縮放類型  function zoom_type($ZOOM_TYPE)  {    $this->ZOOM=$ZOOM_TYPE;  }  //對圖片進行縮放,如果不指定高度和寬度就進行縮放  function zoom()  {    //縮放的大小    if($this->ZOOM==0)    {      $this->ZOOM_;gt;PICTURE_WIDTH * $this->ZOOM_MULTIPLE;      $this->ZOOM_HEIGHT=$this->PICTURE_HEIGHT * $this->ZOOM_MULTIPLE;    }    //建立一個真彩圖象    $this->TRUE_COLOR=imagecreatetruecolor($this->ZOOM_WIDTH,$this->ZOOM_HEIGHT);    $WHITE=imagecolorallocate($this->TRUE_COLOR,255,255,255);    imagefilledrectangle($this->TRUE_COLOR,0,0,$this->ZOOM_WIDTH,$this->ZOOM_HEIGHT,$WHITE);    imagecopyresized($this->TRUE_COLOR,$this->PICTURE_CREATE,0,0,0,0,$this->ZOOM_WIDTH,$this->ZOOM_HEIGHT,$this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);  }  //end of zoom  //裁切圖片,按座標或自動  function cut()  {    $this->TRUE_COLOR=imagecreatetruecolor($this->CUT_WIDTH,$this->CUT_WIDTH);    imagecopy($this->TRUE_COLOR,$this->PICTURE_CREATE, 0, 0, $this->CUT_X, $this->CUT_Y,$this->CUT_WIDTH,$this->CUT_HEIGHT);  }  //end of cut  /*  在圖片上放文字或圖片  浮水印文字  */  function _mark_text()  {    $this->TRUE_COLOR=imagecreatetruecolor($this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);    $this->WORD=mb_convert_encoding($this->FONT_WORD,'utf-8','gb2312');    /*    取得使用 TrueType 字型的文本的範圍    */    $TEMP = imagettfbbox($this->FONT_SIZE,0,$this->FONT_PATH,$this->WORD);    $WORD_LENGTH=strlen($this->WORD);    $WORD_WIDTH =$TEMP[2] - $TEMP[6];    $WORD_HEIGHT =$TEMP[3] - $TEMP[7];    /*    文字浮水印的預設位置為右下角    */    if($this->WORD_X=="")    {      $this->WORD_X=$this->PICTURE_WIDTH-$WORD_WIDTH;    }    if($this->WORD_Y=="")    {      $this->WORD_Y=$this->PICTURE_HEIGHT-$WORD_HEIGHT;    }    imagesettile($this->TRUE_COLOR,$this->PICTURE_CREATE);    imagefilledrectangle($this->TRUE_COLOR,0,0,$this->PICTURE_WIDTH,$this->PICTURE_HEIGHT,IMG_COLOR_TILED);    $TEXT2=imagecolorallocate($this->TRUE_COLOR,$this->RED,$this->GREEN,$this->Blue);    imagettftext($this->TRUE_COLOR,$this->FONT_SIZE,$this->ANGLE,$this->WORD_X,$this->WORD_Y,$TEXT2,$this->FONT_PATH,$this->WORD);  }  /*  浮水印圖片  */function _mark_picture(){  /*  擷取浮水印圖片的資訊  */  @$SIZE=getimagesize($this->FORCE_URL);  if(!$SIZE)  {    exit($this->ERROR['unalviable']);  }  $FORCE_PICTURE_;  $FORCE_PICTURE_HEIGHT=$SIZE[1];  //建立浮水印圖片  switch($SIZE[2])  {    case 1:      $FORCE_PICTURE_CREATE=imagecreatefromgif($this->FORCE_URL);      $FORCE_PICTURE_TYPE="gif";      break;    case 2:      $FORCE_PICTURE_CREATE=imagecreatefromjpeg($this->FORCE_URL);      $FORCE_PICTURE_TYPE="jpg";      break;    case 3:      $FORCE_PICTURE_CREATE=imagecreatefrompng($this->FORCE_URL);      $FORCE_PICTURE_TYPE="png";      break;  }/*  判斷浮水印圖片的大小，並產生靶心圖表片的大小，如果浮水印比圖片大，則產生圖片大小為浮水印圖片的大小。否則產生的圖片大小為原圖片大小。*/  $this->NEW_PICTURE=$this->PICTURE_CREATE;  if($FORCE_PICTURE_WIDTH>$this->PICTURE_WIDTH)  {    $CREATE_;gt;FORCE_START_X;  }  else  {    $CREATE_;gt;PICTURE_WIDTH;  }  if($FORCE_PICTURE_HEIGHT>$this->PICTURE_HEIGHT)  {    $CREATE_HEIGHT=$FORCE_PICTURE_HEIGHT-$this->FORCE_START_Y;  }  else  {    $CREATE_HEIGHT=$this->PICTURE_HEIGHT;  }  /*  建立一個畫布  */  $NEW_PICTURE_CREATE=imagecreatetruecolor($CREATE_WIDTH,$CREATE_HEIGHT);  $WHITE=imagecolorallocate($NEW_PICTURE_CREATE,255,255,255);  /*  將背景圖拷貝到畫布中  */  imagecopy($NEW_PICTURE_CREATE, $this->PICTURE_CREATE, 0, 0, 0, 0,$this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);  /*  將靶心圖表片拷貝到背景圖片上  */  imagecopy($NEW_PICTURE_CREATE, $FORCE_PICTURE_CREATE, $this->FORCE_X, $this->FORCE_Y, $this->FORCE_START_X, $this->FORCE_START_Y,$FORCE_PICTURE_WIDTH,$FORCE_PICTURE_HEIGHT);  $this->TRUE_COLOR=$NEW_PICTURE_CREATE;}//end of markfunction alpha_(){  $this->TRUE_COLOR=imagecreatetruecolor($this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);  $rgb="#CDCDCD";  $tran_color="#000000";  for($j=0;$j<=$this->PICTURE_HEIGHT-1;$j++)  {    for ($i=0;$i<=$this->PICTURE_WIDTH-1;$i++)    {      $rgb = imagecolorat($this->PICTURE_CREATE,$i,$j);      $r = ($rgb >> 16) & 0xFF;      $g = ($rgb >> 8) & 0xFF;      $b = $rgb & 0xFF;      $now_color=imagecolorallocate($this->PICTURE_CREATE,$r,$g,$b);      if ($now_color==$tran_color)      {        continue;      }      else      {        $color=imagecolorallocatealpha($this->PICTURE_CREATE,$r,$g,$b,$ALPHA);        imagesetpixel($this->PICTURE_CREATE,$ALPHA_X+$i,$ALPHA_Y+$j,$color);      }      $this->TRUE_COLOR=$this->PICTURE_CREATE;    }  }}/*圖片旋轉:沿y軸旋轉*/function turn_y(){  $this->TRUE_COLOR=imagecreatetruecolor($this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);  for ($x = 0; $x < $this->PICTURE_WIDTH; $x++)  {    imagecopy($this->TRUE_COLOR, $this->PICTURE_CREATE, $this->PICTURE_WIDTH - $x - 1, 0, $x, 0, 1, $this->PICTURE_HEIGHT);  }}/*沿X軸旋轉*/function turn_x(){  $this->TRUE_COLOR=imagecreatetruecolor($this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);  for ($y = 0; $y < $this->PICTURE_HEIGHT; $y++)  {    imagecopy($this->TRUE_COLOR, $this->PICTURE_CREATE, 0, $this->PICTURE_HEIGHT - $y - 1, 0, $y, $this->PICTURE_WIDTH, 1);  }}/*任意角度旋轉*/function turn(){  $this->TRUE_COLOR=imagecreatetruecolor($this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);  imageCopyResized($this->TRUE_COLOR,$this->PICTURE_CREATE,0,0,0,0,$this->PICTURE_WIDTH,$this->PICTURE_HEIGHT,$this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);  $WHITE=imagecolorallocate($this->TRUE_COLOR,255,255,255);  $this->TRUE_COLOR=imagerotate ($this->TRUE_COLOR, $this->CIRCUMROTATE, $WHITE);}/*圖片銳利化*/function sharp(){  $this->TRUE_COLOR=imagecreatetruecolor($this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);  $cnt=0;  for ($x=0; $x<$this->PICTURE_WIDTH; $x++)  {    for ($y=0; $y<$this->PICTURE_HEIGHT; $y++)    {      $src_clr1 = imagecolorsforindex($this->TRUE_COLOR, imagecolorat($this->PICTURE_CREATE, $x-1, $y-1));      $src_clr2 = imagecolorsforindex($this->TRUE_COLOR, imagecolorat($this->PICTURE_CREATE, $x, $y));      $r = intval($src_clr2["red"]+$this->SHARP*($src_clr2["red"]-$src_clr1["red"]));      $g = intval($src_clr2["green"]+$this->SHARP*($src_clr2["green"]-$src_clr1["green"]));      $b = intval($src_clr2["blue"]+$this->SHARP*($src_clr2["blue"]-$src_clr1["blue"]));      $r = min(255, max($r, 0));      $g = min(255, max($g, 0));      $b = min(255, max($b, 0));      if (($DST_CLR=imagecolorexact($this->PICTURE_CREATE, $r, $g, $b))==-1)        $DST_CLR = imagecolorallocate($this->PICTURE_CREATE, $r, $g, $b);        $cnt++;      if ($DST_CLR==-1) die("color allocate faile at $x, $y ($cnt).");        imagesetpixel($this->TRUE_COLOR, $x, $y, $DST_CLR);    }  }}/*  將圖片反色處理??*/function return_color(){  /*  建立一個畫布  */  $NEW_PICTURE_CREATE=imagecreate($this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);  $WHITE=imagecolorallocate($NEW_PICTURE_CREATE,255,255,255);  /*  將背景圖拷貝到畫布中  */  imagecopy($NEW_PICTURE_CREATE, $this->PICTURE_CREATE, 0, 0, 0, 0,$this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);  $this->TRUE_COLOR=$NEW_PICTURE_CREATE;}/*產生靶心圖表片並顯示*/function show(){  // 判斷瀏覽器,若是IE就不發送頭  if(isset($_SERVER['HTTP_USER_AGENT']))  {    $ua = strtoupper($_SERVER['HTTP_USER_AGENT']);    if(!preg_match('/^.*MSIE.*\)$/i',$ua))    {      header("Content-type:$this->PICTURE_MIME");    }  }  $OUT=$this->PICTURE_TYPE;  $OUT($this->TRUE_COLOR);}/*產生靶心圖表片並儲存*/function save_picture(){  // 以 JPEG 格式將映像輸出到瀏覽器或檔案  $OUT=$this->PICTURE_TYPE;  if(function_exists($OUT))  {    // 判斷瀏覽器,若是IE就不發送頭    if(isset($_SERVER['HTTP_USER_AGENT']))    {      $ua = strtoupper($_SERVER['HTTP_USER_AGENT']);      if(!preg_match('/^.*MSIE.*\)$/i',$ua))      {        header("Content-type:$this->PICTURE_MIME");      }    }    if(!$this->TRUE_COLOR)    {      exit($this->ERROR['unavilable']);    }    else    {      $OUT($this->TRUE_COLOR,$this->DEST_URL);      $OUT($this->TRUE_COLOR);    }  }}/*解構函式：釋放圖片*/function __destruct(){/*釋放圖片*/  imagedestroy($this->TRUE_COLOR);  imagedestroy($this->PICTURE_CREATE);}//end of class}?>

希望本文所述對大家的php程式設計有所協助。