请教有关php_exif的问题。急，在线等。

Question

<?php
$filename = "test.jpg";
//$exif = exif_read_data ($filename,0,true); //有这个函数吗？
$exif = getimagesize($filename);
//print_r($exif);
echo "test.jpg:<br />\n";
echo "<img src='$filename' border=0 $exif[3]><br /><br />\n";
?>

Answer 1

<style>
body{font-size:12px;font-family:tahoma}
</style>
<?php
$exif = exif_read_data ('test.jpg',0,true);echo "test.jpg:<br />\n";
echo "<img src=test.jpg border=0 width=400><br /><br />\n";
foreach($exif as $key=>$section) {
  foreach($section as $name=>$val) {
       echo "$name: $val<br />\n";
   }
}
?>
下面的地址是运行后的截图，读出来的exif信息太多，实际我要用到的只是其中的部分。我想请教的就是如何读出这部分的EXIF信息。谢谢。http://club.phpe.net/uploads/post-2-1070936812.gif

Answer 2

1、请给出函数exif_read_data 的代码
2、把那张jpg图片打包后贴于www.dev-club.com 的php版面

Answer 3

exif_read_data应该是PHP自带的函数吧？我也不知道，知道我就不问了，呵。图随便找个，只要有EXIF信息的便可以。比如：http://photo.uxs.cn/uploads/post-1-1071641912.jpg
它的EXIF信息为：相机厂商 FUJIFILM
相机型号 FinePix S602 ZOOM
软件     Adobe Photoshop 7.0
修改时间 2003-12-17 14:06:36
Exif 版本 V2.2
拍摄时间 2003-12-17 12:05:42
图片尺寸 525 x 700
压缩率   3 Bits/Pixel
曝光时间 1/100s
光圈     F 2.8
曝光模式 光圈优先
感光度 ISO 160
亮度     EV 4.08
曝光补偿 EV 0
最大光圈 F2.8
测光模式 多重
闪光灯   关 强制 
焦距     11.6 mm
拍摄距离 微距
白平衡   日光白荧光 (D5700-7100K)
锐度     锐利

Answer 4

哦，是我疏忽了
返回的是一个多维数组
Array
(
    [FILE] => Array
        (
            [FileName] => post-1-1071641912.jpg
            [FileDateTime] => 1071706598
            [FileSize] => 116491
            [FileType] => 2
            [MimeType] => image/jpeg
            [SectionsFound] => ANY_TAG, IFD0, THUMBNAIL, EXIF
        )    [COMPUTED] => Array
        (
            [html] => width="525" height="700"
            [Height] => 700
            [Width] => 525
            [IsColor] => 1
            [ByteOrderMotorola] => 0
            [CCDWidth] => 1mm
            [ApertureFNumber] => f/2.8
            [Copyright] =>     
            [Thumbnail.FileType] => 2
            [Thumbnail.MimeType] => image/jpeg
        )    [IFD0] => Array
        (
            [Make] => FUJIFILM
            [Model] => FinePix S602 ZOOM
            [Orientation] => 1
            [XResolution] => 72/1
            [YResolution] => 72/1
            [ResolutionUnit] => 2
            [Software] => Adobe Photoshop 7.0
            [DateTime] => 2003:12:17 14:06:36
            [YCbCrPositioning] => 1
            [Copyright] =>     
            [Exif_IFD_Pointer] => 236
        )    [THUMBNAIL] => Array
        (
            [Compression] => 6
            [XResolution] => 72/1
            [YResolution] => 72/1
            [ResolutionUnit] => 2
            [JPEGInterchangeFormat] => 874
            [JPEGInterchangeFormatLength] => 4845
        )    [EXIF] => Array
        (
            [ExposureTime] => 10/1000
            [FNumber] => 280/100
            [ExposureProgram] => 3
            [ISOSpeedRatings] => 160
            [ExifVersion] => 0220
            [DateTimeOriginal] => 2003:12:17 12:05:42
            [DateTimeDigitized] => 2003:12:17 12:05:42
            [ComponentsConfiguration] => 
 
            [CompressedBitsPerPixel] => 32/10
            [ShutterSpeedValue] => 660/100
            [ApertureValue] => 300/100
            [BrightnessValue] => 408/100
            [ExposureBiasValue] => 0/100
            [MaxApertureValue] => 300/100
            [MeteringMode] => 5
            [LightSource] => 12
            [Flash] => 16
            [FocalLength] => 1160/100
            [SubSecTime] => 718
            [FlashPixVersion] => 0100
            [ColorSpace] => 1
            [ExifImageWidth] => 525
            [ExifImageLength] => 700
            [FocalPlaneXResolution] => 2678/1
            [FocalPlaneYResolution] => 2674/1
            [FocalPlaneResolutionUnit] => 3
            [SensingMethod] => 2
            [FileSource] => 
            [SceneType] => 

            [ExposureMode] => 0
            [WhiteBalance] => 1
            [SceneCaptureType] => 0
            [Sharpness] => 2
            [SubjectDistanceRange] => 1
        ))
比如你想知道光圈，可以
echo $exif[COMPUTED][ApertureFNumber]; //out f/2.8