当上传图片与移动设备上的PHP剥离GPS头？ [英] exif when uploading pictures with php on a mobile device stripping GPS header?
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问题描述
我有一个脚本将照片上传到用PHP编写的网站。当我在iPhone上使用Safari上传图片时，当检查exif数据时，某些标题似乎被剥离。当我从我的iPhone上采取完全相同的照片，并通过电子邮件发送给我自己，并从计算机上传时，所有的exif数据都在那里。
我想知道是否有一个iPhone或PHP脚本的设置，我错过了，当我尝试上传时，会让我抓住exif的GPS部分从我的iPhone。我只想从exif_read_data获取GPS数据，当我通过iPhone上传图片到我的网站时。
来自Iphone上的Safari的一个Exif例子：
图像类型为：JPEG
FILE.FileName：20130417141031image.jpg
FILE.FileDateTime：1366225831
FILE.FileSize：1692449
FILE.FileType：2
FILE.MimeType：image / jpeg
FILE.SectionsFound：ANY_TAG，IFD0，EXIF
COMPUTED.html： width =3264height =2448
COMPUTED.Height：2448
COMPUTED.Width：3264
COMPUTED.IsColor：1
COMPUTED.ByteOrderMotorola：1
IFD0.Orientation：6
IFD0.Exif_IFD_Pointer：38
EXIF.ColorSpace：1
EXIF.ExifImageWidth：3264
EXIF.ExifImageLength：2448
从我的电脑上传的同一个图像的同一个图像的一个Exif例子：
图像类型是：JPEG
FILE.FileName：20130417142504image.jpeg
FILE.FileDateTime：1366226835
FILE.FileSiz e：1744896
FILE.FileType：2
FILE.MimeType：image / jpeg
FILE.SectionsFound：ANY_TAG，IFD0，THUMBNAIL，EXIF，GPS
COMPUTED.html：width = 3264height =2448
COMPUTED.Height：2448
COMPUTED.Width：3264
COMPUTED.IsColor：1
COMPUTED.ByteOrderMotorola：1
COMPUTED。 ApertureFNumber：f / 2.4
COMPUTED.Thumbnail.FileType：2
COMPUTED.Thumbnail.MimeType：image / jpeg
IFD0.Make：Apple
IFD0.Model：iPhone 4S
IFD0.Orientation：6
IFD0.XResolution：72/1
IFD0.YResolution：72/1
IFD0.ResolutionUnit：2
IFD0.Software：6.1.3
IFD0.DateTime：2013：04：17 15:13:39
IFD0.YCbCrPositioning：1
IFD0.Exif_IFD_Pointer：204
IFD0.GPS_IFD_Pointer：594
THUMBNAIL。压缩：6
THUMBNAIL.X分辨率：72/1
THUMBNAIL.Y分辨率：72/1
THUMBNAIL.ResolutionUnit：2
THUMBNAIL.JPEGInterchangeFormat：890
THUMBNAIL.JPEGInterchangeFormatLength ：7684
EXIF.ExposureTime：1/20
EXIF.FNumber：12/5
EX IF.ExposureProgram：2
EXIF.ISOSpeedRatings：50
EXIF.ExifVersion：0221
EXIF.DateTimeOriginal：2013：04：17 15:13:39
EXIF.DateTimeDigitized：2013 ：04：17 15:13:39
EXIF.ComponentsConfiguration：
EXIF.ShutterSpeedValue：2779/643
EXIF.ApertureValue：4845/1918
EXIF.BrightnessValue：13523/4727
EXIF.MeteringMode：3
EXIF.Flash：16
EXIF.FocalLength：107/25
EXIF.SubjectLocation：Array
EXIF.FlashPixVersion：0100
EXIF.ColorSpace：1
EXIF.ExifImageWidth：3264
EXIF.ExifImageLength：2448
EXIF.SensingMethod：2
EXIF.ExposureMode：0
EXIF.WhiteBalance： 0
EXIF.FocalLengthIn35mmFilm：35
EXIF.SceneCaptureType：0
GPS.GPSLatitudeRef：N
GPS.GPSLatitude：Array
GPS.GPSLongitudeRef：W
GPS.GPSLongitude：Array
GPS.GPSAltitudeRef：
GPS.GPSAltitude：55556/297
GPS.GPSTimeStamp：Array
GPS.GPSImgDirectionRef：T
GPS.GPSImgDirection： 19688/145
她e是我用于我的PHP脚本照片的代码，我删除了标题，并要求：
<？php
require（'[...]'）;
mysql_select_db（$ db_name，$ oConn）;
$ JobNum = $ _POST ['JobNum']; （$（$ _FILES [file] [type] ==image / gif）
$（$ _FILES [file] [type ]
（$ _FILES [file] [type] ==image / pjpeg））
&&（$ _FILES [文件] [size]< 10000000））
{
if（$ _FILES [file] [error]> 0）
{
ps_log （Bad Photo Upload - Return Code：。$ _FILES [file] [error]）;
{
ps_log（Upload：。$ _FILES [file] [name]）;
ps_log（Type：。$ _FILES [file] [type]）;
ps_log（Size：。（$ _FILES [file] [size] / 1024）。Kb）;
ps_log（Temp file：。$ _FILES [file] [tmp_name]。< br />）;
$ photoname = $ _FILES ['file'] ['tmp_name'];
$ root =[...];
$ location = $ _SERVER ['DOCUMENT_ROOT']。$ root。$ photoname;
$ exif = exif_read_data（$ photoname，0，true）;
$ filename = $ exif [FILE] [FileName];
$ model = $ exif [IFD0] [Model];
$ date = $ exif [IFD0] [DateTime];
$ lon = $ exif [GPS] [GPSLongitude];
$ lonref = $ exif [GPS] ['GPSLongitudeRef'];
$ lat = $ exif [GPS] [GPSLatitude];
$ latref = $ exif [GPS] ['GPSLatitudeRef'];
$ lon = Photos :: getGps（$ lon，$ lonref）;
$ lat = Photos :: getGps（$ lat，$ latref）;
$ photo = new UploadedPhoto（）;
$ photo-> JobNum = $ JobNum;
$ photo-> TempFile = $ _FILES [file] [tmp_name];
$ photo-> FileName = $ _FILES [file] [name];
$ photo->评论= $ _POST ['Comment'];
$ photo-> Model = $ model;
$ photo-> DateStamp = $ date;
$ photo-> Lat = $ lat;
$ photo-> Lng = $ lon;
$ photo-> SaveGeo（）;
else
echoInvalid file;
}
header（[...]）;？>
解决方案唯一可以做的就是创建一个原生应用程序（或Apache Cordova应用程序），将处理上传。 GPS数据被移动Safari剥离。你的应用程序应该照原样上传图片。到目前为止，没有其他办法。
I have a script to upload photos to a website written in PHP. When I upload a picture using Safari on my IPhone, some of the header appears to be stripped when I check the exif data. When I take the exact same picture from my IPhone and email it to myself and upload it from a computer, all of the exif data is there.
I was wondering if there was a setting on the IPhone or a PHP script that I am missing that will let me grab the GPS part of the exif when I try to upload from my IPhone. All I want is to grab the GPS array from the exif_read_data when I upload pictures to my website through my IPhone.
An Exif example from my Safari on Iphone:
Image type is: JPEG
FILE.FileName: 20130417141031image.jpg
FILE.FileDateTime: 1366225831
FILE.FileSize: 1692449
FILE.FileType: 2
FILE.MimeType: image/jpeg
FILE.SectionsFound: ANY_TAG, IFD0, EXIF
COMPUTED.html: width="3264" height="2448"
COMPUTED.Height: 2448
COMPUTED.Width: 3264
COMPUTED.IsColor: 1
COMPUTED.ByteOrderMotorola: 1
IFD0.Orientation: 6
IFD0.Exif_IFD_Pointer: 38
EXIF.ColorSpace: 1
EXIF.ExifImageWidth: 3264
EXIF.ExifImageLength: 2448
An Exif example of the same image uploaded from my PC taken by the same phone:
Image type is: JPEG
FILE.FileName: 20130417142504image.jpeg
FILE.FileDateTime: 1366226835
FILE.FileSize: 1744896
FILE.FileType: 2
FILE.MimeType: image/jpeg
FILE.SectionsFound: ANY_TAG, IFD0, THUMBNAIL, EXIF, GPS
COMPUTED.html: width="3264" height="2448"
COMPUTED.Height: 2448
COMPUTED.Width: 3264
COMPUTED.IsColor: 1
COMPUTED.ByteOrderMotorola: 1
COMPUTED.ApertureFNumber: f/2.4
COMPUTED.Thumbnail.FileType: 2
COMPUTED.Thumbnail.MimeType: image/jpeg
IFD0.Make: Apple
IFD0.Model: iPhone 4S
IFD0.Orientation: 6
IFD0.XResolution: 72/1
IFD0.YResolution: 72/1
IFD0.ResolutionUnit: 2
IFD0.Software: 6.1.3
IFD0.DateTime: 2013:04:17 15:13:39
IFD0.YCbCrPositioning: 1
IFD0.Exif_IFD_Pointer: 204
IFD0.GPS_IFD_Pointer: 594
THUMBNAIL.Compression: 6
THUMBNAIL.XResolution: 72/1
THUMBNAIL.YResolution: 72/1
THUMBNAIL.ResolutionUnit: 2
THUMBNAIL.JPEGInterchangeFormat: 890
THUMBNAIL.JPEGInterchangeFormatLength: 7684
EXIF.ExposureTime: 1/20
EXIF.FNumber: 12/5
EXIF.ExposureProgram: 2
EXIF.ISOSpeedRatings: 50
EXIF.ExifVersion: 0221
EXIF.DateTimeOriginal: 2013:04:17 15:13:39
EXIF.DateTimeDigitized: 2013:04:17 15:13:39
EXIF.ComponentsConfiguration:
EXIF.ShutterSpeedValue: 2779/643
EXIF.ApertureValue: 4845/1918
EXIF.BrightnessValue: 13523/4727
EXIF.MeteringMode: 3
EXIF.Flash: 16
EXIF.FocalLength: 107/25
EXIF.SubjectLocation: Array
EXIF.FlashPixVersion: 0100
EXIF.ColorSpace: 1
EXIF.ExifImageWidth: 3264
EXIF.ExifImageLength: 2448
EXIF.SensingMethod: 2
EXIF.ExposureMode: 0
EXIF.WhiteBalance: 0
EXIF.FocalLengthIn35mmFilm: 35
EXIF.SceneCaptureType: 0
GPS.GPSLatitudeRef: N
GPS.GPSLatitude: Array
GPS.GPSLongitudeRef: W
GPS.GPSLongitude: Array
GPS.GPSAltitudeRef:
GPS.GPSAltitude: 55556/297
GPS.GPSTimeStamp: Array
GPS.GPSImgDirectionRef: T
GPS.GPSImgDirection: 19688/145
Here is the code that I use for my PHP script for photos, I removed the header and requires:
<?php
require('[...]');
mysql_select_db($db_name, $oConn);
$JobNum = $_POST['JobNum'];
if ((($_FILES["file"]["type"] == "image/gif")
|| ($_FILES["file"]["type"] == "image/jpeg")
|| ($_FILES["file"]["type"] == "image/pjpeg"))
&& ($_FILES["file"]["size"] < 10000000))
{
if ($_FILES["file"]["error"] > 0)
{
ps_log( "Bad Photo Upload - Return Code: " . $_FILES["file"]["error"]);
}
else
{
ps_log( "Upload: " . $_FILES["file"]["name"]);
ps_log( "Type: " . $_FILES["file"]["type"]);
ps_log( "Size: " . ($_FILES["file"]["size"] / 1024) . " Kb");
ps_log( "Temp file: " . $_FILES["file"]["tmp_name"] . "<br />");
$photoname = $_FILES['file']['tmp_name'];
$root = "[...]";
$location = $_SERVER['DOCUMENT_ROOT'].$root.$photoname;
$exif = exif_read_data($photoname, 0, true);
$filename = $exif["FILE"]["FileName"];
$model = $exif["IFD0"]["Model"];
$date = $exif["IFD0"]["DateTime"];
$lon = $exif["GPS"]["GPSLongitude"];
$lonref = $exif["GPS"]['GPSLongitudeRef'];
$lat = $exif["GPS"]["GPSLatitude"];
$latref = $exif["GPS"]['GPSLatitudeRef'];
$lon = Photos::getGps($lon, $lonref);
$lat = Photos::getGps($lat, $latref);
$photo = new UploadedPhoto();
$photo->JobNum = $JobNum;
$photo->TempFile = $_FILES["file"]["tmp_name"];
$photo->FileName = $_FILES["file"]["name"];
$photo->Comments = $_POST['Comment'];
$photo->Model = $model ;
$photo->DateStamp = $date ;
$photo->Lat = $lat ;
$photo->Lng = $lon ;
$photo->SaveGeo();
}
}
else
{
echo "Invalid file";
}
header("[...]");?>
解决方案 Only thing you can do is to create a native app (or Apache Cordova app), that will handle the upload. The GPS data is stripped by mobile Safari. Your app should upload the picture as-is. As of now there is no other way around it.
It may be something along these lines: http://gonzalo123.com/2013/10/28/taking-photos-with-a-phonegapcordova-application-and-uploading-them-to-the-server/
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