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标题: 显示照片exif信息PHP代码 [打印本页]

作者: superadmin 时间: 2008-2-13 15:06
标题: 显示照片exif信息PHP代码
中文方式显示照片EXIF信息，显示图片中所略图

这东西除了一些php论坛简单显示三两信息，别人的lb5000论坛上看到过显示，asp的也有不过很久没接触看着晕。

不想重复劳动，搜过google，除了asp没找到其他开源的显示exif的，所以整理出来或许有用。

没什么技术含量，基本只是汉化和资料整理的工作，以下代码为主要部分，所有文件在压缩包内，可以广泛用于相册和论坛显示图片信息的插件，希望熟悉相关知识的朋友找找bug或者加以优化。

目前应该缺不少信息，如果单单使用应该足够了。

看到过别人传过来的照片里面有缩略图，photoshop做的，但是不知道怎么加进去，有人知道么？

缩略图可以显示

PHP代码：

<?
/**
* 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",

站.长站

      "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], Www@Chinaz@com
         "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], 中.国.站.长.站
         "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"       => $exif[EXIF][ExifVersion], Chinaz_com
         "FlashPix版本" => "Ver. ".number_format($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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