PHP getImageSize函数代码示例

 public function imageAction()
 {
     $request = $this->getRequest();
     $response = $this->getResponse();
     $id = (int) $request->getQuery('id');
     $w = (int) $request->getQuery('w');
     $h = (int) $request->getQuery('h');
     $hash = $request->getQuery('hash');
     $realHash = DatabaseObject_BlogPostImage::GetImageHash($id, $w, $h);
     $this->_helper->viewRenderer->setNoRender();
     $image = new DatabaseObject_BlogPostImage($this->db);
     if ($hash != $realHash || !$image->load($id)) {
         $response->setHttpResponseCode(404);
         return;
     }
     try {
         $fullpath = $image->createThumbnail($w, $h);
     } catch (Exception $ex) {
         $fullpath = $image->getFullPath();
     }
     $info = getImageSize($fullpath);
     $response->setHeader('content-type', $info['mime']);
     $response->setHeader('content-length', filesize($fullpath));
     echo file_get_contents($fullpath);
 }

function gerar_tumbs_real($t_x, $t_y, $qualidade, $c_original, $c_final)
{
    $thumbnail = imagecreatetruecolor($t_x, $t_y);
    $original = $c_original;
    $igInfo = getImageSize($c_original);
    switch ($igInfo['mime']) {
        case 'image/gif':
            if (imagetypes() & IMG_GIF) {
                $originalimage = imageCreateFromGIF($original);
            } else {
                $ermsg = MSG_GIF_NOT_COMPATIBLE . '<br />';
            }
            break;
        case 'image/jpeg':
            if (imagetypes() & IMG_JPG) {
                $originalimage = imageCreateFromJPEG($original);
            } else {
                $ermsg = MSG_JPG_NOT_COMPATIBLE . '<br />';
            }
            break;
        case 'image/png':
            if (imagetypes() & IMG_PNG) {
                $originalimage = imageCreateFromPNG($original);
            } else {
                $ermsg = MSG_PNG_NOT_COMPATIBLE . '<br />';
            }
            break;
        case 'image/wbmp':
            if (imagetypes() & IMG_WBMP) {
                $originalimage = imageCreateFromWBMP($original);
            } else {
                $ermsg = MSG_WBMP_NOT_COMPATIBLE . '<br />';
            }
            break;
        default:
            $ermsg = $igInfo['mime'] . MSG_FORMAT_NOT_COMPATIBLE . '<br />';
            break;
    }
    $nLargura = $igInfo[0];
    $nAltura = $igInfo[1];
    if ($nLargura > $t_x and $nAltura > $t_y) {
        if ($t_x <= $t_y) {
            $nLargura = (int) ($igInfo[0] * $t_y / $igInfo[1]);
            $nAltura = $t_y;
        } else {
            $nLargura = $t_x;
            $nAltura = (int) ($igInfo[1] * $t_x / $igInfo[0]);
            if ($nAltura < $t_y) {
                $nLargura = (int) ($igInfo[0] * $t_y / $igInfo[1]);
                $nAltura = $t_y;
            }
        }
    }
    $x_pos = $t_x / 2 - $nLargura / 2;
    $y_pos = $t_y / 2 - $nAltura / 2;
    imagecopyresampled($thumbnail, $originalimage, $x_pos, $y_pos, 0, 0, $nLargura, $nAltura, $igInfo[0], $igInfo[1]);
    imagejpeg($thumbnail, $c_final, $qualidade);
    imagedestroy($thumbnail);
    return 'ok';
}

 /**
  * Action - image
  * display images in the predetermined size or in the natural size
  *
  * Access to the action is possible in the following paths:
  * - /utility/image
  *
  * @return void
  */
 public function imageAction()
 {
     $request = $this->getRequest();
     $response = $this->getResponse();
     $username = $request->getQuery('username');
     $id = (int) $request->getQuery('id');
     $w = (int) $request->getQuery('w');
     $h = (int) $request->getQuery('h');
     $hash = $request->getQuery('hash');
     $realHash = Default_Model_DbTable_BlogPostImage::GetImageHash($id, $w, $h);
     // disable autorendering since we're outputting an image
     $this->_helper->viewRenderer->setNoRender();
     $image = new Default_Model_DbTable_BlogPostImage($this->db);
     if ($hash != $realHash || !$image->load($id)) {
         // image not found
         $response->setHttpResponseCode(404);
         return;
     }
     try {
         $fullpath = $image->createThumbnail($w, $h, $username);
     } catch (Exception $ex) {
         $fullpath = $image->getFullPath($username);
     }
     $info = getImageSize($fullpath);
     $response->setHeader('content-type', $info['mime']);
     $response->setHeader('content-length', filesize($fullpath));
     echo file_get_contents($fullpath);
 }

 function load()
 {
     if ($this->loaded) {
         return true;
     }
     //$size = $this->get_size();
     //if (!$size) throw new exception("Failed loading image");
     list($this->w, $this->h, $this->type) = getImageSize($this->src);
     switch ($this->type) {
         case 1:
             $this->img = imageCreateFromGif($this->src);
             break;
         case 2:
             $this->img = imageCreateFromJpeg($this->src);
             break;
         case 3:
             $this->img = imageCreateFromPng($this->src);
             break;
         default:
             throw new exception("Unsuported image type");
             break;
     }
     $this->loaded = true;
     return true;
 }

 /**
  * Initialize a layer from a given image path
  * 
  * From an upload form, you can give the "tmp_name" path
  * 
  * @param string $path
  * 
  * @return ImageWorkshopLayer
  */
 public static function initFromPath($path)
 {
     if (file_exists($path) && !is_dir($path)) {
         if (!is_readable($path)) {
             throw new ImageWorkshopException('Can\'t open the file at "' . $path . '" : file is not writable, did you check permissions (755 / 777) ?', static::ERROR_NOT_WRITABLE_FILE);
         }
         $imageSizeInfos = @getImageSize($path);
         $mimeContentType = explode('/', $imageSizeInfos['mime']);
         if (!$mimeContentType || !array_key_exists(1, $mimeContentType)) {
             throw new ImageWorkshopException('Not an image file (jpeg/png/gif) at "' . $path . '"', static::ERROR_NOT_AN_IMAGE_FILE);
         }
         $mimeContentType = $mimeContentType[1];
         switch ($mimeContentType) {
             case 'jpeg':
                 $image = imageCreateFromJPEG($path);
                 break;
             case 'gif':
                 $image = imageCreateFromGIF($path);
                 break;
             case 'png':
                 $image = imageCreateFromPNG($path);
                 break;
             default:
                 throw new ImageWorkshopException('Not an image file (jpeg/png/gif) at "' . $path . '"', static::ERROR_NOT_AN_IMAGE_FILE);
                 break;
         }
         return new ImageWorkshopLayer($image);
     }
     throw new ImageWorkshopException('No such file found at "' . $path . '"', static::ERROR_IMAGE_NOT_FOUND);
 }

 public function __construct($path)
 {
     list($this->width, $this->height, $this->type) = @getImageSize($path);
     if ($this->type == IMAGETYPE_JPEG) {
         $this->image = imageCreateFromJPEG($path);
         $this->extension = 'jpg';
         if (function_exists('exif_read_data')) {
             $this->exif = exif_read_data($path);
         }
         $this->rotateToExifOrientation();
     } else {
         if ($this->type == IMAGETYPE_PNG) {
             $this->image = imageCreateFromPNG($path);
             $this->extension = 'png';
         } else {
             if ($this->type == IMAGETYPE_GIF) {
                 $this->image = imageCreateFromGIF($path);
                 $this->extension = 'gif';
             }
         }
     }
     if ($this->image) {
         $this->valid = true;
     }
 }

 /**
  * Returns content of a file. If it's an image the content of the file is not returned but rather an image tag is.
  * This method is taken from tslib_content
  * TODO: cache result
  *
  * @param string The filename, being a TypoScript resource data type or a FAL-Reference (file:123)
  * @param string Additional parameters (attributes). Default is empty alt and title tags.
  * @return string If jpg,gif,jpeg,png: returns image_tag with picture in. If html,txt: returns content string
  * @see FILE()
  */
 public static function getFileResource($fName, $options = array())
 {
     if (!(is_object($GLOBALS['TSFE']) && is_object($GLOBALS['TSFE']->tmpl))) {
         tx_rnbase::load('tx_rnbase_util_Misc');
         tx_rnbase_util_Misc::prepareTSFE(array('force' => TRUE));
     }
     if (self::isFALReference($fName)) {
         /** @var FileRepository $fileRepository */
         $fileRepository = TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\Resource\\FileRepository');
         $fileObject = $fileRepository->findByUid(intval(substr($fName, 5)));
         $incFile = is_object($fileObject) ? $fileObject->getForLocalProcessing(FALSE) : FALSE;
     } else {
         $incFile = self::getFileName($fName);
     }
     if ($incFile) {
         // Im BE muss ein absoluter Pfad verwendet werden
         $fullPath = TYPO3_MODE == 'BE' ? PATH_site . $incFile : $incFile;
         $utility = tx_rnbase_util_Typo3Classes::getGeneralUtilityClass();
         $fileinfo = $utility::split_fileref($incFile);
         if ($utility::inList('jpg,gif,jpeg,png', $fileinfo['fileext'])) {
             $imgFile = $incFile;
             $imgInfo = @getImageSize($imgFile);
             $addParams = isset($options['addparams']) ? $options['addparams'] : 'alt="" title=""';
             $ret = '<img src="' . $GLOBALS['TSFE']->absRefPrefix . $imgFile . '" width="' . $imgInfo[0] . '" height="' . $imgInfo[1] . '"' . self::getBorderAttr(' border="0"') . ' ' . $addParams . ' />';
         } elseif (file_exists($fullPath) && filesize($fullPath) < 1024 * 1024) {
             $ret = @file_get_contents($fullPath);
             $subpart = isset($options['subpart']) ? $options['subpart'] : '';
             if ($subpart) {
                 tx_rnbase::load('tx_rnbase_util_Templates');
                 $ret = tx_rnbase_util_Templates::getSubpart($ret, $subpart);
             }
         }
     }
     return $ret;
 }

 private function _getImageResource($image_file, $save = FALSE)
 {
     $image_info = getImageSize($image_file);
     if ($save) {
         $this->_image_mime = $image_info['mime'];
     }
     switch ($image_info['mime']) {
         case 'image/gif':
             if ($save) {
                 $this->_image_type = 'gif';
             }
             $img_rs = imageCreateFromGIF($image_file);
             break;
         case 'image/jpeg':
             if ($save) {
                 $this->_image_type = 'jpeg';
             }
             $img_rs = imageCreateFromJPEG($image_file);
             break;
         case 'image/png':
             if ($save) {
                 $this->_image_type = 'png';
             }
             $img_rs = imageCreateFromPNG($image_file);
             imageAlphaBlending($img_rs, TRUE);
             imageSaveAlpha($img_rs, TRUE);
             break;
     }
     return $img_rs;
 }

 /**
  * Creates a new smiley.
  * 
  * @return	Smiley		new smiley
  */
 public static function create($filename, $destination, $field, $title = null, $code = null, $showOrder = 0, $smileyCategoryID = 0)
 {
     if (!file_exists($filename)) {
         throw new UserInputException($field, 'notFound');
     }
     if (!getImageSize($filename)) {
         throw new UserInputException($field, 'noValidImage');
     }
     // copy
     if ($filename != $destination && !copy($filename, $destination)) {
         throw new UserInputException($field, 'copyFailed');
     }
     // set permissions
     @chmod($destination, 0666);
     // generate title & code by filename
     $name = preg_replace('/\\.[^\\.]+$/', '', basename($destination));
     if ($title === null) {
         $title = $name;
     }
     if ($code === null) {
         $code = ':' . $name . ':';
     }
     // save data
     $smileyID = self::insert(str_replace(WCF_DIR, '', $destination), $code, array('smileyTitle' => $title, 'showOrder' => $showOrder, 'smileyCategoryID' => $smileyCategoryID));
     // get editor object
     $smiley = new SmileyEditor($smileyID);
     // save position
     $smiley->addPosition($smileyCategoryID, $showOrder);
     // save data
     return $smiley;
 }

 protected function get_any_type($srcpath)
 {
     try {
         $this->check_file($srcpath);
         $srcSize = getImageSize($srcpath);
         switch ($srcSize[2]) {
             case 1:
                 $img = imageCreateFromGif($srcpath);
                 break;
             case 2:
                 $img = imageCreateFromJpeg($srcpath);
                 break;
             case 3:
                 $img = imageCreateFromPng($srcpath);
                 break;
             default:
                 throw new Imgdexception('not possible to get any type - srcpath:' . $srcpath);
                 break;
         }
         $image['width'] = $srcSize[0];
         $image['height'] = $srcSize[1];
         $image['img'] = $img;
         return $image;
     } catch (Imgdexception $e) {
         $e->print_debug(__FILE__, __LINE__);
         return false;
     }
 }

 /** check if image has correct width and height (0 for unlimited values) 
  * 
  * @example   $rule_image_3  = new NetefxValidatorRuleFUNCTION("Image",  "image width at least 10, image height at most 500", 'error', 
  * 																array('NetefxValidatorLibraryFile', 'check_image_size', 
  * 																	array('field'  => 'Image', 'minWidth' => 10, 'maxWidth' => 0, 'minHeight' => 0, 'maxHeight' => 500)));
  */
 static function check_image_size($data, $args)
 {
     $field = $args["field"];
     $arr_file = $data[$field];
     if ($arr_file["tmp_name"]) {
         $image_size = getImageSize($arr_file["tmp_name"]);
         if ($image_size) {
             $width = $image_size[0];
             $height = $image_size[1];
             $minWidth = $args["minWidth"];
             $minHeight = $args["minHeight"];
             $maxWidth = $args["maxWidth"];
             $maxHeight = $args["maxHeight"];
             if ($minWidth and $width < $minWidth) {
                 return false;
             }
             if ($minHeight and $height < $minHeight) {
                 return false;
             }
             if ($maxWidth and $width > $maxWidth) {
                 return false;
             }
             if ($maxHeight and $height > $maxHeight) {
                 return false;
             }
         }
     }
     return true;
 }

function image_createThumb($src, $dest, $maxWidth, $maxHeight, $quality = 75)
{
    if (file_exists($src) && isset($dest)) {
        // path info
        $destInfo = pathInfo($dest);
        // image src size
        $srcSize = getImageSize($src);
        // image dest size $destSize[0] = width, $destSize[1] = height
        $srcRatio = $srcSize[0] / $srcSize[1];
        // width/height ratio
        $destRatio = $maxWidth / $maxHeight;
        if ($destRatio > $srcRatio) {
            $destSize[1] = $maxHeight;
            $destSize[0] = $maxHeight * $srcRatio;
        } else {
            $destSize[0] = $maxWidth;
            $destSize[1] = $maxWidth / $srcRatio;
        }
        // path rectification
        if ($destInfo['extension'] == "gif") {
            $dest = substr_replace($dest, 'jpg', -3);
        }
        // true color image, with anti-aliasing
        $destImage = imageCreateTrueColor($destSize[0], $destSize[1]);
        //       imageAntiAlias($destImage,true);
        // src image
        switch ($srcSize[2]) {
            case 1:
                //GIF
                $srcImage = imageCreateFromGif($src);
                break;
            case 2:
                //JPEG
                $srcImage = imageCreateFromJpeg($src);
                break;
            case 3:
                //PNG
                $srcImage = imageCreateFromPng($src);
                break;
            default:
                return false;
                break;
        }
        // resampling
        imageCopyResampled($destImage, $srcImage, 0, 0, 0, 0, $destSize[0], $destSize[1], $srcSize[0], $srcSize[1]);
        // generating image
        switch ($srcSize[2]) {
            case 1:
            case 2:
                imageJpeg($destImage, $dest, $quality);
                break;
            case 3:
                imagePng($destImage, $dest);
                break;
        }
        return true;
    } else {
        return 'No such File';
    }
}

function create_thumb($src_file, $thumb_file, $t_width, $t_height)
{
    if (!file_exists($src_file)) {
        return false;
    }
    $src_info = getImageSize($src_file);
    //如果来源图像小于或等于缩略图则拷贝源图像作为缩略图
    if ($src_info[0] <= $t_width && $src_info[1] <= $t_height) {
        if (!copy($src_file, $thumb_file)) {
            return false;
        }
        return true;
    }
    //按比例计算缩略图大小
    if ($src_info[0] - $t_width > $src_info[1] - $t_height) {
        $t_height = $t_width / $src_info[0] * $src_info[1];
    } else {
        $t_width = $t_height / $src_info[1] * $src_info[0];
    }
    //取得文件扩展名
    $fileext = get_ext($src_file);
    switch ($fileext) {
        case 'jpg':
            $src_img = ImageCreateFromJPEG($src_file);
            break;
        case 'png':
            $src_img = ImageCreateFromPNG($src_file);
            break;
        case 'gif':
            $src_img = ImageCreateFromGIF($src_file);
            break;
    }
    //创建一个真彩色的缩略图像
    $thumb_img = @ImageCreateTrueColor($t_width, $t_height);
    //ImageCopyResampled函数拷贝的图像平滑度较好，优先考虑
    if (function_exists('imagecopyresampled')) {
        @ImageCopyResampled($thumb_img, $src_img, 0, 0, 0, 0, $t_width, $t_height, $src_info[0], $src_info[1]);
    } else {
        @ImageCopyResized($thumb_img, $src_img, 0, 0, 0, 0, $t_width, $t_height, $src_info[0], $src_info[1]);
    }
    //生成缩略图
    switch ($fileext) {
        case 'jpg':
            ImageJPEG($thumb_img, $thumb_file);
            break;
        case 'gif':
            ImageGIF($thumb_img, $thumb_file);
            break;
        case 'png':
            ImagePNG($thumb_img, $thumb_file);
            break;
    }
    //销毁临时图像
    @ImageDestroy($src_img);
    @ImageDestroy($thumb_img);
    return true;
}

 static function get_image_size($filename)
 {
     if (isset(self::$gisz[$filename])) {
         return self::$gisz[$filename];
     }
     $sz = @getImageSize($filename);
     self::$gisz[$filename] = $sz;
     return $sz;
 }

function create_thumb($path, $thumb_path, $width = THUMB_WIDTH, $height = THUMB_HEIGHT)
{
    $image_info = getImageSize($path);
    // see EXIF for faster way
    switch ($image_info['mime']) {
        case 'image/gif':
            if (imagetypes() & IMG_GIF) {
                // not the same as IMAGETYPE
                $o_im = @imageCreateFromGIF($path);
            } else {
                throw new Exception('GIF images are not supported');
            }
            break;
        case 'image/jpeg':
            if (imagetypes() & IMG_JPG) {
                $o_im = @imageCreateFromJPEG($path);
            } else {
                throw new Exception('JPEG images are not supported');
            }
            break;
        case 'image/png':
            if (imagetypes() & IMG_PNG) {
                $o_im = @imageCreateFromPNG($path);
            } else {
                throw new Exception('PNG images are not supported');
            }
            break;
        case 'image/wbmp':
            if (imagetypes() & IMG_WBMP) {
                $o_im = @imageCreateFromWBMP($path);
            } else {
                throw new Exception('WBMP images are not supported');
            }
            break;
        default:
            throw new Exception($image_info['mime'] . ' images are not supported');
            break;
    }
    list($o_wd, $o_ht, $html_dimension_string) = $image_info;
    $ratio = $o_wd / $o_ht;
    $t_ht = $width;
    $t_wd = $height;
    if (1 > $ratio) {
        $t_wd = round($o_wd * $t_wd / $o_ht);
    } else {
        $t_ht = round($o_ht * $t_ht / $o_wd);
    }
    $t_wd = $t_wd < 1 ? 1 : $t_wd;
    $t_ht = $t_ht < 1 ? 1 : $t_ht;
    $t_im = imageCreateTrueColor($t_wd, $t_ht);
    imageCopyResampled($t_im, $o_im, 0, 0, 0, 0, $t_wd, $t_ht, $o_wd, $o_ht);
    imagejpeg($t_im, $thumb_path, 85);
    chmod($thumb_path, 0664);
    imageDestroy($o_im);
    imageDestroy($t_im);
    return array($t_wd, $t_ht);
}