PHP实现显示照片exif信息的方法

2024-05-04 23:24:20

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PHP编程可实现显示照片EXIF信息，显示图片中缩略图效果，其代码如下：

<?/*** 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']);$innerhtml .= "<TABLE>";foreach($exif as $name=>$val) { $innerhtml .= "<TR><TD>{$name}</TD><TD>{$val}</TD></TR>";}$innerhtml .= "<TR><TD colspan=/"2/">";if ($_GET['img']) { $image = exif_thumbnail($_GET['img']);} else { $image = false;}if ($image!==false) { $innerhtml .= "<img src=/"thumbnail.php?img=".$_GET['img']."/">";} else { // no thumbnail available, handle the error here $innerhtml .= "No thumbnail available";}$innerhtml .= "</TD></TR></TABLE>";?><html><head> <title>图片信息</title><meta http-equiv="Content-Type" content="text/html; charset=??????"></head><body><SCRIPT></SCRIPT></body></html>

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