php获取照片exif信息的函数

   /**
  * 获取图象信息的函数
  *
  * 一个全面获取图象信息的函数
  *
  * @access public
  * @param string $img 图片路径
  * @return array
  */
  function GetImageInfoVal($ImageInfo,$val_arr) {
  $InfoVal = "未知";
  foreach($val_arr as $name=>$val) {
  if ($name==$ImageInfo) {
  $InfoVal = &$val;
  break;
  }
  }
  return $InfoVal;
  }
  function GetImageInfo($img) {
  
  
  
  $imgtype = array("", "GIF", "JPG", "PNG", "SWF", "PSD", "BMP", "TIFF(intel byte order)", "TIFF(motorola byte order)", "JPC", "JP2", "JPX", "JB2", "SWC", "IFF", "WBMP", "XBM");
  $Orientation = array("", "top left side", "top right side", "bottom right side", "bottom left side", "left side top", "right side top", "right side bottom", "left side bottom");
  $ResolutionUnit = array("", "", "英寸", "厘米");
  $YCbCrPositioning = array("", "the center of pixel array", "the datum point");
  $ExposureProgram = array("未定义", "手动", "标准程序", "光圈先决", "快门先决", "景深先决", "运动模式", "肖像模式", "风景模式");
  $MeteringMode_arr = array(
  "0" => "未知",
  "1" => "平均",
  "2" => "中央重点平均测光",
  "3" => "点测",
  "4" => "分区",
  "5" => "评估",
  "6" => "局部",
  "255" => "其他"
  );
  $Lightsource_arr = array(
  "0" => "未知",
  "1" => "日光",
  "2" => "荧光灯",
  "3" => "钨丝灯",
  "10" => "闪光灯",
  "17" => "标准灯光A",
  "18" => "标准灯光B",
  "19" => "标准灯光C",
  "20" => "D55",
  "21" => "D65",
  "22" => "D75",
  "255" => "其他"
  );
  $Flash_arr = array(
  "0" => "flash did not fire",
  "1" => "flash fired",
  "5" => "flash fired but strobe return light not detected",
  "7" => "flash fired and strobe return light detected",
  );
  
  $exif = exif_read_data ($img,"IFD0");
  if ($exif===false) {
  $new_img_info = array ("文件信息" => "没有图片EXIF信息");
  }
  else
  {
  $exif = exif_read_data ($img,0,true);
  $new_img_info = array (
  "文件信息" => "-----------------------------",
  "文件名" => $exif['FILE']['FileName'],
  "文件类型" => $imgtype[$exif['FILE']['FileType']],
  "文件格式" => $exif['FILE']['MimeType'],
  "文件大小" => $exif['FILE']['FileSize'],
  "时间戳" => date("Y-m-d H:i:s",$exif['FILE']['FileDateTime']),
  "图像信息" => "-----------------------------",
  "图片说明" => $exif['IFD0']['ImageDescription'],
  "制造商" => $exif['IFD0']['Make'],
  "型号" => $exif['IFD0']['Model'],
  "方向" => $Orientation[$exif['IFD0']['Orientation']],
  "水平分辨率" => $exif['IFD0']['XResolution'].$ResolutionUnit[$exif['IFD0']['ResolutionUnit']],
  "垂直分辨率" => $exif['IFD0']['YResolution'].$ResolutionUnit[$exif['IFD0']['ResolutionUnit']],
  "创建软件" => $exif['IFD0']['Software'],
  "修改时间" => $exif['IFD0']['DateTime'],
  "作者" => $exif['IFD0']['Artist'],
  "YCbCr位置控制" => $YCbCrPositioning[$exif['IFD0']['YCbCrPositioning']],
  "版权" => $exif['IFD0']['Copyright'],
  "摄影版权" => $exif['COMPUTED']['Copyright.Photographer'],
  "编辑版权" => $exif['COMPUTED']['Copyright.Editor'],
  "拍摄信息" => "-----------------------------",
  "Exif版本" => $exif['EXIF']['ExifVersion'],
  "FlashPix版本" => "Ver. ".number_format($exif['EXIF']['FlashPixVersion']/100,2),
  "拍摄时间" => $exif['EXIF']['DateTimeOriginal'],
  "数字化时间" => $exif['EXIF']['DateTimeDigitized'],
  "拍摄分辨率高" => $exif['COMPUTED']['Height'],
  "拍摄分辨率宽" => $exif['COMPUTED']['Width'],
  /*
  The actual aperture value of lens when the image was taken.
  Unit is APEX.
  To convert this value to ordinary F-number(F-stop),
  calculate this value's power of root 2 (=1.4142).
  For example, if the ApertureValue is '5', F-number is pow(1.41425,5) = F5.6.
  */
  "光圈" => $exif['EXIF']['ApertureValue'],
  "快门速度" => $exif['EXIF']['ShutterSpeedValue'],
  "快门光圈" => $exif['COMPUTED']['ApertureFNumber'],
  "最大光圈值" => "F".$exif['EXIF']['MaxApertureValue'],
  "曝光时间" => $exif['EXIF']['ExposureTime'],
  "F-Number" => $exif['EXIF']['FNumber'],
  "测光模式" => GetImageInfoVal($exif['EXIF']['MeteringMode'],$MeteringMode_arr),
  "光源" => GetImageInfoVal($exif['EXIF']['LightSource'], $Lightsource_arr),
  "闪光灯" => GetImageInfoVal($exif['EXIF']['Flash'], $Flash_arr),
  "曝光模式" => ($exif['EXIF']['ExposureMode']==1?"手动":"自动"),
  "白平衡" => ($exif['EXIF']['WhiteBalance']==1?"手动":"自动"),
  "曝光程序" => $ExposureProgram[$exif['EXIF']['ExposureProgram']],
  /*
  Brightness of taken subject, unit is APEX. To calculate Exposure(Ev) from BrigtnessValue(Bv), you must add SensitivityValue(Sv).
  Ev=Bv+Sv Sv=log((ISOSpeedRating/3.125),2)
  ISO100:Sv=5, ISO200:Sv=6, ISO400:Sv=7, ISO125:Sv=5.32.
  */
  "曝光补偿" => $exif['EXIF']['ExposureBiasValue']."EV",
  "ISO感光度" => $exif['EXIF']['ISOSpeedRatings'],
  "分量配置" => (bin2hex($exif['EXIF']['ComponentsConfiguration'])=="01020300"?"YCbCr":"RGB"),//'0x04,0x05,0x06,0x00'="RGB" '0x01,0x02,0x03,0x00'="YCbCr"
  "图像压缩率" => $exif['EXIF']['CompressedBitsPerPixel']."Bits/Pixel",
  "对焦距离" => $exif['COMPUTED']['FocusDistance']."m",
  "焦距" => $exif['EXIF']['FocalLength']."mm",
  "等价35mm焦距" => $exif['EXIF']['FocalLengthIn35mmFilm']."mm",
  /*
  Stores user comment. This tag allows to use two-byte character code or unicode. First 8 bytes describe the character code. 'JIS' is a Japanese character code (known as Kanji).
  '0x41,0x53,0x43,0x49,0x49,0x00,0x00,0x00':ASCII
  '0x4a,0x49,0x53,0x00,0x00,0x00,0x00,0x00':JIS
  '0x55,0x4e,0x49,0x43,0x4f,0x44,0x45,0x00':Unicode
  '0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00':Undefined
  */
  "用户注释编码" => $exif['COMPUTED']['UserCommentEncoding'],
  "用户注释" => $exif['COMPUTED']['UserComment'],
  "色彩空间" => ($exif['EXIF']['ColorSpace']==1?"sRGB":"Uncalibrated"),
  "Exif图像宽度" => $exif['EXIF']['ExifImageLength'],
  "Exif图像高度" => $exif['EXIF']['ExifImageWidth'],
  "文件来源" => (bin2hex($exif['EXIF']['FileSource'])==0x03?"digital still camera":"unknown"),
  "场景类型" => (bin2hex($exif['EXIF']['SceneType'])==0x01?"A directly photographed image":"unknown"),
  "缩略图文件格式" => $exif['COMPUTED']['Thumbnail.FileType'],
  "缩略图Mime格式" => $exif['COMPUTED']['Thumbnail.MimeType']
  );
  }
  return $new_img_info;
  }
  
  $innerhtml = "";
  $exif = GetImageInfo($_GET['img']);
  $innerhtml .= "";
  
  foreach($exif as $name=>$val) {
  $innerhtml .= "";
  }
  
  $innerhtml .= "
";
  if ($_GET['img']) {
  $image = exif_thumbnail($_GET['img']);
  } else {
  $image = false;
  }
  if ($image!==false) {
  $innerhtml .= "";
  } else {
  // no thumbnail available, handle the error here
  $innerhtml .= "No thumbnail available";
  }
  
  $innerhtml .= "
";
  print_r($exif);
  ?>

上一篇: 今年国度考公务员最难一题
下一篇: 用php读取汉字点阵数据的方法

点击获得Trackback地址

发表评论

内 容: