public static function get_exif_info($img)
{
$exif = Exif::get_exif_arr($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");
$exif_info = array("文件名" => isset($exif['FILE']['FileName']) ? $exif['FILE']['FileName'] : "", "文件类型" => isset($exif['FILE']['FileType']) ? isset($imgtype[$exif['FILE']['FileType']]) ? $imgtype[$exif['FILE']['FileType']] : "" : "", "文件格式" => isset($exif['FILE']['MimeType']) ? $exif['FILE']['MimeType'] : "", "文件大小" => isset($exif['FILE']['FileSize']) ? number_format($exif['FILE']['FileSize'] / 1000, 0) . " KB" : "", "时间戳" => isset($exif['FILE']['FileDateTime']) ? $exif['FILE']['FileDateTime'] : "", "图片说明" => isset($exif['IFD0']['ImageDescription']) ? $exif['IFD0']['ImageDescription'] : "", "制造商" => isset($exif['IFD0']['Make']) ? $exif['IFD0']['Make'] : "", "型号" => isset($exif['IFD0']['Model']) ? $exif['IFD0']['Model'] : "", "方向" => isset($exif['IFD0']['Orientation']) ? isset($Orientation[$exif['IFD0']['Orientation']]) ? $Orientation[$exif['IFD0']['Orientation']] : "" : "", "水平分辨率" => isset($exif['IFD0']['XResolution']) ? $exif['IFD0']['XResolution'] : "" . isset($exif['IFD0']['ResolutionUnit']) ? isset($ResolutionUnit[$exif['IFD0']['ResolutionUnit']]) ? $ResolutionUnit[$exif['IFD0']['ResolutionUnit']] : "" : "", "垂直分辨率" => isset($exif['IFD0']['YResolution']) ? $exif['IFD0']['YResolution'] : "" . isset($exif['IFD0']['ResolutionUnit']) ? isset($ResolutionUnit[$exif['IFD0']['ResolutionUnit']]) ? $ResolutionUnit[$exif['IFD0']['ResolutionUnit']] : "" : "", "创建软件" => isset($exif['IFD0']['Software']) ? $exif['IFD0']['Software'] : "", "修改时间" => isset($exif['IFD0']['DateTime']) ? $exif['IFD0']['DateTime'] : "", "作者" => isset($exif['IFD0']['Artist']) ? $exif['IFD0']['Artist'] : "", "YCbCr位置控制" => isset($exif['IFD0']['YCbCrPositioning']) ? isset($YCbCrPositioning[$exif['IFD0']['YCbCrPositioning']]) ? $YCbCrPositioning[$exif['IFD0']['YCbCrPositioning']] : "" : "", "版权" => isset($exif['IFD0']['Copyright']) ? $exif['IFD0']['Copyright'] : "", "摄影版权" => isset($exif['COMPUTED']['Copyright.Photographer']) ? $exif['COMPUTED']['Copyright.Photographer'] : "", "编辑版权" => isset($exif['COMPUTED']['Copyright.Editor']) ? $exif['COMPUTED']['Copyright.Editor'] : "", "Exif版本" => isset($exif['EXIF']['ExifVersion']) ? $exif['EXIF']['ExifVersion'] : "", "FlashPix版本" => isset($exif['EXIF']['FlashPixVersion']) ? "Ver. " . number_format($exif['EXIF']['FlashPixVersion'] / 100, 2) : "", "拍摄时间" => isset($exif['EXIF']['DateTimeOriginal']) ? $exif['EXIF']['DateTimeOriginal'] : "", "数字化时间" => isset($exif['EXIF']['DateTimeDigitized']) ? $exif['EXIF']['DateTimeDigitized'] : "", "拍摄分辨率高" => isset($exif['COMPUTED']['Height']) ? $exif['COMPUTED']['Height'] : "", "拍摄分辨率宽" => isset($exif['COMPUTED']['Width']) ? $exif['COMPUTED']['Width'] : "", "光圈" => isset($exif['EXIF']['ApertureValue']) ? $exif['EXIF']['ApertureValue'] : "", "快门速度" => isset($exif['EXIF']['ShutterSpeedValue']) ? $exif['EXIF']['ShutterSpeedValue'] : "", "快门光圈" => isset($exif['COMPUTED']['ApertureFNumber']) ? $exif['COMPUTED']['ApertureFNumber'] : "", "最大光圈值" => isset($exif['EXIF']['MaxApertureValue']) ? "F" . $exif['EXIF']['MaxApertureValue'] : "", "曝光时间" => isset($exif['EXIF']['ExposureTime']) ? $exif['EXIF']['ExposureTime'] : "", "F-Number" => isset($exif['EXIF']['FNumber']) ? $exif['EXIF']['FNumber'] : "", "测光模式" => isset($exif['EXIF']['MeteringMode']) ? Exif::get_img_val($exif['EXIF']['MeteringMode'], $MeteringMode_arr) : "", "光源" => isset($exif['EXIF']['LightSource']) ? Exif::get_img_val($exif['EXIF']['LightSource'], $Lightsource_arr) : "", "闪光灯" => isset($exif['EXIF']['Flash']) ? Exif::get_img_val($exif['EXIF']['Flash'], $Flash_arr) : "", "曝光模式" => isset($exif['EXIF']['ExposureMode']) ? $exif['EXIF']['ExposureMode'] == 1 ? "手动" : "自动" : "", "白平衡" => isset($exif['EXIF']['WhiteBalance']) ? $exif['EXIF']['WhiteBalance'] == 1 ? "手动" : "自动" : "", "曝光程序" => isset($exif['EXIF']['ExposureProgram']) ? isset($ExposureProgram[$exif['EXIF']['ExposureProgram']]) ? $ExposureProgram[$exif['EXIF']['ExposureProgram']] : "" : "", "曝光补偿" => isset($exif['EXIF']['ExposureBiasValue']) ? $exif['EXIF']['ExposureBiasValue'] . "EV" : "", "ISO感光度" => isset($exif['EXIF']['ISOSpeedRatings']) ? $exif['EXIF']['ISOSpeedRatings'] : "", "图像压缩率" => isset($exif['EXIF']['CompressedBitsPerPixel']) ? $exif['EXIF']['CompressedBitsPerPixel'] . "Bits/Pixel" : "", "对焦距离" => isset($exif['COMPUTED']['FocusDistance']) ? $exif['COMPUTED']['FocusDistance'] . "m" : "", "焦距" => isset($exif['EXIF']['FocalLength']) ? $exif['EXIF']['FocalLength'] . "mm" : "", "等价35mm焦距" => isset($exif['EXIF']['FocalLengthIn35mmFilm']) ? $exif['EXIF']['FocalLengthIn35mmFilm'] . "mm" : "", "用户注释编码" => isset($exif['COMPUTED']['UserCommentEncoding']) ? $exif['COMPUTED']['UserCommentEncoding'] : "", "用户注释" => isset($exif['COMPUTED']['UserComment']) ? $exif['COMPUTED']['UserComment'] : "", "色彩空间" => isset($exif['EXIF']['ColorSpace']) ? $exif['EXIF']['ColorSpace'] == 1 ? "sRGB" : "Uncalibrated" : "", "Exif图像宽度" => isset($exif['EXIF']['ExifImageLength']) ? $exif['EXIF']['ExifImageLength'] : "", "Exif图像高度" => isset($exif['EXIF']['ExifImageWidth']) ? $exif['EXIF']['ExifImageWidth'] : "", "文件来源" => isset($exif['EXIF']['FileSource']) ? bin2hex($exif['EXIF']['FileSource']) == 0x3 ? "digital still camera" : "unknown" : "", "场景类型" => isset($exif['EXIF']['SceneType']) ? bin2hex($exif['EXIF']['SceneType']) == 0x1 ? "A directly photographed image" : "unknown" : "", "缩略图文件格式" => isset($exif['COMPUTED']['Thumbnail.FileType']) ? $exif['COMPUTED']['Thumbnail.FileType'] : "", "缩略图Mime格式" => isset($exif['COMPUTED']['Thumbnail.MimeType']) ? $exif['COMPUTED']['Thumbnail.MimeType'] : "");
$degree = 0;
if (isset($exif['IFD0']['Orientation'])) {
$ort = $exif['IFD0']['Orientation'];
switch ($ort) {
case 1:
// nothing
break;
case 2:
// nothing
break;
case 3:
$degree = 2;
break;
case 4:
// nothing
$degree = 2;
break;
case 5:
$degree = 1;
break;
case 6:
$degree = 1;
break;
case 7:
$degree = 3;
break;
case 8:
$degree = 3;
break;
}
}
$height = isset($exif['COMPUTED']['Height']) ? $exif['COMPUTED']['Height'] : 0;
$width = isset($exif['COMPUTED']['Width']) ? $exif['COMPUTED']['Width'] : 0;
//拍摄时间
$datetime_original = isset($exif['EXIF']['DateTimeOriginal']) ? $exif['EXIF']['DateTimeOriginal'] : "";
//相机型号
$camera_model = isset($exif['IFD0']['Model']) ? $exif['IFD0']['Model'] : "";
//文件格式
$pic_type = isset($exif['FILE']['MimeType']) ? $exif['FILE']['MimeType'] : "";
$exif_info['degree'] = $degree;
$return = array("exif_info" => $exif_info, "degree" => $degree, "height" => $height, "width" => $width, "datetime_original" => $datetime_original, "pic_type" => $pic_type, "camera_model" => $camera_model);
return $return;
}
