一、安装exif扩展
# cd /datas/package/php-5.6.20/ext/exif/ # /datas/soft/php56/bin/phpize # ./configure --with-php-config=/datas/soft/php56/bin/php-config # make && make install # vim /datas/soft/php56/etc/php.ini 在相应的位置添加： extension = exif.so
# systemctl reload php-fpm56
查看扩展信息：
# echo phpinfo();
二、使用exif获取拍摄相机型号、拍摄时间等
echo "<pre>"; var_dump(exif_read_data(‘./test.jpg‘));
各字段说明：
"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],
"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],
"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]],
"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",
参考文献：
https://www.imooc.com/article/32948?block_id=tuijian_wz
https://blog.csdn.net/wang178yang/article/details/79480810