PHP ImageCreateFromGIF函数代码示例

 private function cropBilde($sti, $filnavn, $nyttFilnavn, $cropBredde, $cropHoyde)
 {
     $gammeltBilde = $sti . $filnavn;
     $bi = @ImageCreateFromJPEG($gammeltBilde) or $bi = @ImageCreateFromPNG($gammeltBilde) or $bi = @ImageCreateFromGIF($gammeltBilde) or $bi = false;
     if ($bi) {
         $naStorrelse = @getimagesize($gammeltBilde);
         $bredde = $naStorrelse[0];
         $hoyde = $naStorrelse[1];
         $nyBreddeNy = $bredde / $cropBredde;
         $nyHoydeNy = $hoyde / $cropHoyde;
         $halvertHoyde = $cropHoyde / 2;
         $halvertBredde = $cropBredde / 2;
         $thumb = @ImageCreateTrueColor($cropBredde, $cropHoyde);
         if ($bredde > $hoyde) {
             $tilpassetBredde = $bredde / $nyHoydeNy;
             $halvBredde = $tilpassetBredde / 2;
             $intBredde = $halvBredde - $halvertBredde;
             @ImageCopyResampled($thumb, $bi, -$intBredde, 0, 0, 0, $tilpassetBredde, $cropHoyde, $bredde, $hoyde);
         } elseif ($bredde < $hoyde || $bredde == $hoyde) {
             $tilPassetHoyde = $hoyde / $nyBreddeNy;
             $halvHoyde = $tilPassetHoyde / 2;
             $intHoyde = $halvHoyde - $halvertHoyde;
             @ImageCopyResampled($thumb, $bi, 0, -$intHoyde, 0, 0, $cropBredde, $tilPassetHoyde, $bredde, $hoyde);
         } else {
             @ImageCopyResampled($thumb, $bi, 0, 0, 0, 0, $cropBredde, $cropHoyde, $bredde, $hoyde);
         }
         @imagejpeg($thumb, $sti . $nyttFilnavn, 50);
         return $nyttFilnavn;
     } else {
         return -1;
     }
 }

 function open_image($file = null)
 {
     $image_type = $this->image_type($file);
     if (!$image_type) {
         trigger_error("Invalid image file: {$file}.", E_USER_ERROR);
     }
     $this->type = $image_type[0];
     $this->width = $image_type[1];
     $this->height = $image_type[2];
     if (!in_array($this->type, $this->supported_img_types)) {
         trigger_error("File type '{$this->type}' not supported.", E_USER_ERROR);
     }
     // Destroy if already open
     if ($this->image) {
         ImageDestroy($this->image);
     }
     switch ($this->type) {
         case 'JPG':
             $this->image = ImageCreateFromJPEG($file);
             break;
         case 'GIF':
             $this->image = ImageCreateFromGIF($file);
             break;
         case 'PNG':
             $this->image = ImageCreateFromPNG($file);
             break;
     }
 }

 function SetVar($srcFile, $echoType)
 {
     if (!file_exists($srcFile)) {
         echo '源图片文件不存在!';
         exit;
     }
     $this->srcFile = $srcFile;
     $this->echoType = $echoType;
     $info = "";
     $data = GetImageSize($this->srcFile, $info);
     switch ($data[2]) {
         case 1:
             if (!function_exists("imagecreatefromgif")) {
                 echo "你的GD库不能使用GIF格式的图片，请使用Jpeg或PNG格式！<a href='javascript:go(-1);'>返回</a>";
                 exit;
             }
             $this->im = ImageCreateFromGIF($this->srcFile);
             break;
         case 2:
             if (!function_exists("imagecreatefromjpeg")) {
                 echo "你的GD库不能使用jpeg格式的图片，请使用其它格式的图片！<a href='javascript:go(-1);'>返回</a>";
                 exit;
             }
             $this->im = ImageCreateFromJpeg($this->srcFile);
             break;
         case 3:
             $this->im = ImageCreateFromPNG($this->srcFile);
             break;
     }
     $this->srcW = ImageSX($this->im);
     $this->srcH = ImageSY($this->im);
 }

 /**
  * Agrega una marca de agua a la foto
  * @param string $absolutePath
  */
 private function _addWaterMark($absolutePath)
 {
     $DOC_ROOT = $this->_CI->input->server('DOCUMENT_ROOT') . "/";
     if (FALSE === is_file($absolutePath)) {
         return FALSE;
     }
     switch (TRUE) {
         case stristr($absolutePath, 'jpg'):
             $photoImage = ImageCreateFromJpeg("{$absolutePath}");
             break;
         case stristr($absolutePath, 'gif'):
             $photoImage = ImageCreateFromGIF("{$absolutePath}");
             break;
         case stristr($absolutePath, 'png'):
             $photoImage = ImageCreateFromPNG("{$absolutePath}");
             break;
     }
     ImageAlphaBlending($photoImage, true);
     // Añadimos aquí el fichero de marca de agua.
     $logoImage = ImageCreateFromPNG($DOC_ROOT . "assets/imagenes/marca_agua_telam.png");
     $logoW = ImageSX($logoImage);
     $logoH = ImageSY($logoImage);
     $tamanox = imagesx($photoImage);
     $ubicacionX = ($tamanox - $logoW) / 2;
     $tamanoy = imagesy($photoImage);
     $ubicacionY = ($tamanoy - $logoH) / 2;
     ImageCopy($photoImage, $logoImage, $ubicacionX, $ubicacionY, 0, 0, $logoW, $logoH);
     imagejpeg($photoImage, $absolutePath);
     ImageDestroy($photoImage);
     ImageDestroy($logoImage);
 }

 function get_hex($location, $extensions = array('PNG', 'png', 'Png', 'JPG', 'jpg', 'Jpg', 'JPEG', 'jpeg', 'Jpeg', 'GIF', 'gif', 'Gif'), $postvar = "myimage", $getvar = "imgclix")
 {
     if (isset($_GET[$getvar])) {
         foreach ($extensions as $var) {
             if (file_exists($location . str_replace(array("..", ".", $var), '', html_entity_decode($_GET[$getvar])) . "." . $var)) {
                 if (stristr($var, 'png')) {
                     $im = ImageCreateFromPng($location . str_replace(array("..", ".", $var), '', html_entity_decode($_GET[$getvar])) . "." . $var);
                 } elseif (stristr($var, 'gif')) {
                     $im = ImageCreateFromGIF($location . str_replace(array("..", ".", $var), '', html_entity_decode($_GET[$getvar])) . "." . $var);
                 } elseif (stristr($var, 'jpg') || stristr($var, 'jpeg')) {
                     $im = ImageCreateFromJpeg($location . str_replace(array("..", ".", $var), '', html_entity_decode($_GET[$getvar])) . "." . $var);
                 } else {
                     return FALSE;
                 }
                 $rgb = ImageColorAt($im, $_POST[$postvar . '_x'], $_POST[$postvar . '_y']);
                 $rgb = imagecolorsforindex($im, $rgb);
                 $hex = sprintf('#%02X%02X%02X', $rgb['red'], $rgb['green'], $rgb['blue']);
                 break;
             }
         }
     } else {
         return FALSE;
     }
     if (!isset($hex) || $hex == '') {
         return FALSE;
     }
     return $hex;
 }

 /** 
  * @private
  */
 function thumbnail($imgfile)
 {
     //detect image format
     $this->img["format"] = ereg_replace(".*\\.(.*)\$", "\\1", $imgfile);
     $this->img["format"] = strtoupper($this->img["format"]);
     if ($this->img["format"] == "JPG" || $this->img["format"] == "JPEG") {
         $this->img["format"] = "JPEG";
         $this->img["src"] = @ImageCreateFromJPEG($imgfile);
     } elseif ($this->img["format"] == "PNG") {
         $this->img["format"] = "PNG";
         $this->img["src"] = @ImageCreateFromPNG($imgfile);
     } elseif ($this->img["format"] == "GIF") {
         $this->img["format"] = "GIF";
         if (function_exists("imagecreatefromgif")) {
             $this->img["src"] = @ImageCreateFromGIF($imgfile);
         } else {
             return false;
         }
     } else {
         // not a recognized format
         throw new Exception("Trying to generate a thumbnail of an unsupported format!");
         //die();
     }
     // check for errors
     if (!$this->img["src"]) {
         return false;
     }
     // if no errors, continue
     @($this->img["lebar"] = imagesx($this->img["src"]));
     @($this->img["tinggi"] = imagesy($this->img["src"]));
     //default quality jpeg
     $this->img["quality"] = 85;
     return true;
 }

 public function resize($width, $height)
 {
     $type = exif_imagetype($this->image);
     if ($type == 2) {
         $images_orig = ImageCreateFromJPEG($this->image);
     } elseif ($type == 3) {
         $images_orig = ImageCreateFromPNG($this->image);
     } elseif ($type == 1) {
         $images_orig = ImageCreateFromGIF($this->image);
     } else {
         return false;
     }
     $photoX = ImagesX($images_orig);
     $photoY = ImagesY($images_orig);
     $images_fin = ImageCreateTrueColor($width, $height);
     ImageCopyResampled($images_fin, $images_orig, 0, 0, 0, 0, $width + 1, $height + 1, $photoX, $photoY);
     if ($type == 2) {
         ImageJPEG($images_fin, $this->image);
     } elseif ($type == 3) {
         ImagePNG($images_fin, $this->image);
     } elseif ($type == 1) {
         ImageGIF($images_fin, $this->image);
     }
     ImageDestroy($images_orig);
     ImageDestroy($images_fin);
     return true;
 }

 function SetVar($srcFile, $echoType)
 {
     $this->srcFile = $srcFile;
     $this->echoType = $echoType;
     $info = '';
     $data = GetImageSize($this->srcFile, $info);
     switch ($data[2]) {
         case 1:
             if (!function_exists('imagecreatefromgif')) {
                 exit;
             }
             $this->im = ImageCreateFromGIF($this->srcFile);
             break;
         case 2:
             if (!function_exists('imagecreatefromjpeg')) {
                 exit;
             }
             $this->im = ImageCreateFromJpeg($this->srcFile);
             break;
         case 3:
             $this->im = ImageCreateFromPNG($this->srcFile);
             break;
     }
     $this->srcW = ImageSX($this->im);
     $this->srcH = ImageSY($this->im);
 }

 /**
  * 把图片生成缩略图1
  * @param string $srcFile	源文件			
  * @param string $dstFile	目标文件
  * @param int $dstW		目标图片宽度		
  * @param int $dstH		目标文件高度
  * @param string $dstFormat	目标文件生成的格式, 有png和jpg两种格式
  * @return 错误返回错误对象
  */
 public static function makeThumb1($srcFile, $dstFile, $dstW, $dstH, $dstFormat = "png")
 {
     //打开图片
     $data = GetImageSize($srcFile, &$info);
     switch ($data[2]) {
         case 1:
             $im = @ImageCreateFromGIF($srcFile);
             break;
         case 2:
             $im = @imagecreatefromjpeg($srcFile);
             break;
         case 3:
             $im = @ImageCreateFromPNG($srcFile);
             break;
     }
     if (!$im) {
         throw new TM_Exception(__CLASS__ . ": Create image failed");
     }
     //设定图片大小
     $srcW = ImageSX($im);
     $srcH = ImageSY($im);
     $ni = ImageCreate($dstW, $dstH);
     ImageCopyResized($ni, $im, 0, 0, 0, 0, $dstW, $dstH, $srcW, $srcH);
     //生成指定格式的图片
     if ($dstFormat == "png") {
         imagepng($ni, $dstFile);
     } elseif ($dstFormat == "jpg") {
         ImageJpeg($ni, $dstFile);
     } else {
         imagepng($ni, $dstFile);
     }
 }

function thumbnail($PicPathIn, $PicPathOut, $PicFilenameIn, $PicFilenameOut, $neueHoehe, $Quality)
{
    // Bilddaten ermitteln
    $size = getimagesize("{$PicPathIn}" . "{$PicFilenameIn}");
    $breite = $size[0];
    $hoehe = $size[1];
    $neueBreite = intval($breite * $neueHoehe / $hoehe);
    if ($size[2] == 1) {
        // GIF
        $altesBild = ImageCreateFromGIF("{$PicPathIn}" . "{$PicFilenameIn}");
        $neuesBild = imageCreateTrueColor($neueBreite, $neueHoehe);
        imageCopyResized($neuesBild, $altesBild, 0, 0, 0, 0, $neueBreite, $neueHoehe, $breite, $hoehe);
        imageJPEG($neuesBild, "{$PicPathOut}" . "{$PicFilenameOut}", $Quality);
    }
    if ($size[2] == 2) {
        // JPG
        $altesBild = ImageCreateFromJPEG("{$PicPathIn}" . "{$PicFilenameIn}");
        $neuesBild = imageCreateTrueColor($neueBreite, $neueHoehe);
        imageCopyResized($neuesBild, $altesBild, 0, 0, 0, 0, $neueBreite, $neueHoehe, $breite, $hoehe);
        ImageJPEG($neuesBild, "{$PicPathOut}" . "{$PicFilenameOut}", $Quality);
    }
    if ($size[2] == 3) {
        // PNG
        $altesBild = ImageCreateFromPNG("{$PicPathIn}" . "{$PicFilenameIn}");
        $neuesBild = imageCreateTrueColor($neueBreite, $neueHoehe);
        imageCopyResized($neuesBild, $altesBild, 0, 0, 0, 0, $neueBreite, $neueHoehe, $breite, $hoehe);
        ImageJPEG($neuesBild, "{$PicPathOut}" . "{$PicFilenameOut}", $Quality);
    }
}

 private function thumbnail($imgfile)
 {
     //detect image format
     $this->acHWArr = getimagesize($imgfile);
     $this->img["format"] = ereg_replace(".*\\.(.*)\$", "\\1", $imgfile);
     $this->img["format"] = strtoupper($this->img["format"]);
     if ($this->img["format"] == "JPG" || $this->img["format"] == "JPEG") {
         //JPEG
         $this->img["format"] = "JPEG";
         $this->img["src"] = ImageCreateFromJPEG($imgfile);
     } elseif ($this->img["format"] == "PNG") {
         //PNG
         $this->img["format"] = "PNG";
         $this->img["src"] = ImageCreateFromPNG($imgfile);
     } elseif ($this->img["format"] == "GIF") {
         //GIF
         $this->img["format"] = "GIF";
         $this->img["src"] = ImageCreateFromGIF($imgfile);
     } elseif ($this->img["format"] == "WBMP") {
         //WBMP
         $this->img["format"] = "WBMP";
         $this->img["src"] = ImageCreateFromWBMP($imgfile);
     } else {
         //DEFAULT
         echo "Not Supported File <a href='" . $_SERVER[HTTP_REFERER] . "'>Back</a>";
         exit;
     }
     @($this->img["lebar"] = imagesx($this->img["src"]));
     @($this->img["tinggi"] = imagesy($this->img["src"]));
     //default quality jpeg
     $this->img["quality"] = 75;
 }

 function thumbnail($imgfile, $format = "image/jpeg")
 {
     //detect image format
     $pos = strpos($format, "/");
     $this->img["format"] = strtoupper(substr($format, $pos + 1));
     //$this->img["format"]=ereg_replace(".*\.(.*)$","\\1",$imgfile);
     //$this->img["format"]=strtoupper($this->img["format"]);
     if ($this->img["format"] == "JPG" || $this->img["format"] == "JPEG") {
         //JPEG
         $this->img["format"] = "JPEG";
         $this->img["src"] = ImageCreateFromJPEG($imgfile);
     } elseif ($this->img["format"] == "PNG") {
         //PNG
         $this->img["format"] = "PNG";
         $this->img["src"] = ImageCreateFromPNG($imgfile);
     } elseif ($this->img["format"] == "GIF") {
         //GIF
         $this->img["format"] = "GIF";
         $this->img["src"] = ImageCreateFromGIF($imgfile);
     } elseif ($this->img["format"] == "WBMP") {
         //WBMP
         $this->img["format"] = "WBMP";
         $this->img["src"] = ImageCreateFromWBMP($imgfile);
     } else {
         //DEFAULT
         echo "Not Supported File ";
         $this->is_img = false;
         return;
         //exit();
     }
     @($this->img["lebar"] = imagesx($this->img["src"]));
     @($this->img["tinggi"] = imagesy($this->img["src"]));
     //default quality jpeg
     $this->img["quality"] = 75;
 }

 function thumbnail($imgfile)
 {
     //detect image format
     //$this->img["format"]=ereg_replace(".*\.(.*)$","\\1",$imgfile);
     $this->img["format"] = preg_replace('/.*\\.(.*)$/', "\\1", $imgfile);
     $this->img["format"] = strtoupper($this->img["format"]);
     if ($this->img["format"] == "JPG" || $this->img["format"] == "JPEG") {
         //JPEG
         $this->img["format"] = "JPEG";
         $this->img["src"] = ImageCreateFromJPEG($imgfile);
     } elseif ($this->img["format"] == "PNG") {
         //PNG
         $this->img["format"] = "PNG";
         $this->img["src"] = ImageCreateFromPNG($imgfile);
     } elseif ($this->img["format"] == "GIF") {
         //GIF
         $this->img["format"] = "GIF";
         $this->img["src"] = ImageCreateFromGIF($imgfile);
     } elseif ($this->img["format"] == "WBMP") {
         //WBMP
         $this->img["format"] = "WBMP";
         $this->img["src"] = ImageCreateFromWBMP($imgfile);
     } else {
         //DEFAULT
         echo "Not Supported File";
         exit;
     }
     @($this->img["lebar"] = imagesx($this->img["src"]));
     @($this->img["tinggi"] = imagesy($this->img["src"]));
     //default quality jpeg
     $this->img["quality"] = 75;
 }

function ImageResize($srcFile, $toW, $toH, $toFile = "")
{
    if ($toFile == "") {
        $toFile = $srcFile;
    }
    $info = "";
    $data = GetImageSize($srcFile, $info);
    switch ($data[2]) {
        case 1:
            if (!function_exists("imagecreatefromgif")) {
                echo "你的GD库不能使用GIF格式的图片，请使用Jpeg或PNG格式！<a href='javascript:go(-1);'>返回</a>";
                exit;
            }
            $im = ImageCreateFromGIF($srcFile);
            break;
        case 2:
            if (!function_exists("imagecreatefromjpeg")) {
                echo "你的GD库不能使用jpeg格式的图片，请使用其它格式的图片！<a href='javascript:go(-1);'>返回</a>";
                exit;
            }
            $im = ImageCreateFromJpeg($srcFile);
            break;
        case 3:
            $im = ImageCreateFromPNG($srcFile);
            break;
    }
    $srcW = ImageSX($im);
    $srcH = ImageSY($im);
    $toWH = $toW / $toH;
    $srcWH = $srcW / $srcH;
    if ($toWH <= $srcWH) {
        $ftoW = $toW;
        $ftoH = $ftoW * ($srcH / $srcW);
    } else {
        $ftoH = $toH;
        $ftoW = $ftoH * ($srcW / $srcH);
    }
    if ($srcW > $toW || $srcH > $toH) {
        if (function_exists("imagecreatetruecolor")) {
            @($ni = ImageCreateTrueColor($ftoW, $ftoH));
            if ($ni) {
                ImageCopyResampled($ni, $im, 0, 0, 0, 0, $ftoW, $ftoH, $srcW, $srcH);
            } else {
                $ni = ImageCreate($ftoW, $ftoH);
                ImageCopyResized($ni, $im, 0, 0, 0, 0, $ftoW, $ftoH, $srcW, $srcH);
            }
        } else {
            $ni = ImageCreate($ftoW, $ftoH);
            ImageCopyResized($ni, $im, 0, 0, 0, 0, $ftoW, $ftoH, $srcW, $srcH);
        }
        if (function_exists('imagejpeg')) {
            ImageJpeg($ni, $toFile);
        } else {
            ImagePNG($ni, $toFile);
        }
        ImageDestroy($ni);
    }
    ImageDestroy($im);
}

 function makeIcon($type = 1)
 {
     //$img_des = ImageCreateTrueColor ( $this->size, $this->size );
     $img_des = ImageCreateTrueColor($this->size, $this->size);
     $background = imagecolorallocate($img_des, 255, 255, 255);
     imagefill($img_des, 0, 0, $background);
     switch ($this->t) {
         case 'gif':
             $img_src = ImageCreateFromGIF($this->path);
             break;
         case 'jpg':
             $img_src = ImageCreateFromJPEG($this->path);
             break;
         case 'png':
             $img_src = ImageCreateFromPNG($this->path);
             break;
     }
     if ($type == 1) {
         imagecopyresampled($img_des, $img_src, 0, 0, ($this->nw - $this->size) / 2, 0, $this->nw, $this->nh, $this->w, $this->h);
     } else {
         imagecopyresampled($img_des, $img_src, 0, 0, 0, ($this->nh - $this->size) / 2, $this->nw, $this->nh, $this->w, $this->h);
     }
     /*
     imageline( $img_des , 0 , 0 , 0 , ($this->size-1) , imagecolorallocate( $img_des , 220 , 220 , 220 )  );
     imageline( $img_des , 0 , ($this->size-1) , ($this->size-1) , ($this->size-1) , imagecolorallocate( $img_des , 220 , 220 , 220 )  );
     imageline( $img_des , ($this->size-1) , ($this->size-1) , ($this->size-1) , 0 , imagecolorallocate( $img_des , 220 , 220 , 220 )  );
     imageline( $img_des , ($this->size-1) , 0 , 0 , 0 , imagecolorallocate( $img_des , 220 , 220 , 220 )  );
     */
     //echo $this->dest ;
     switch ($this->t) {
         case 'gif':
             if (empty($this->dest)) {
                 header("Content-type: image/gif");
                 return ImageGIF($img_des);
             } else {
                 return ImageGIF($img_des, $this->dest);
             }
             break;
         case 'jpg':
             if (empty($this->dest)) {
                 header("Content-type: image/jpeg");
                 return ImageJPEG($img_des);
             } else {
                 return ImageJPEG($img_des, $this->dest);
             }
             break;
         case 'png':
             if (empty($this->dest)) {
                 header("Content-type: image/png");
                 return ImagePNG($img_des);
             } else {
                 return ImagePNG($img_des, $this->dest);
             }
             break;
     }
 }