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php通过exif_read_data函数获取图片的exif信息

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Jun 13, 2016 am 09:03 AM

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php通过exif_read_data函数获取图片的exif信息

　　这篇文章主要介绍了php通过exif_read_data函数获取图片的exif信息，默认情况下，PHP读取图片Exif信息模块是不开启的，我们需要先开启这个模块。开启Exif模块需要mbstring支持，这里就不详细说明了，我们来先看下函数的用法

　　php获取图片的exif信息，php自带一个exif_read_data函数可以用来读取图片的exif信息，代码来自php手册

echo "test1.jpg:
n";

$exif = exif_read_data('tests/test1.jpg', 'IFD0');

echo $exif===false ? "No header data found.
n" : "Image contains headers
n";

$exif = exif_read_data('tests/test2.jpg', 0, true);

echo "test2.jpg:
n";

foreach ($exif as $key => $section) {

foreach ($section as $name => $val) {

echo "$key.$name: $val
n";

}

test1.jpg:

No header data found.

test2.jpg:

FILE.FileName: test2.jpg

FILE.FileDateTime: 1017666176

FILE.FileSize: 1240

FILE.FileType: 2

FILE.SectionsFound: ANY_TAG, IFD0, THUMBNAIL, COMMENT

COMPUTED.html: width="1" height="1"

COMPUTED.Height: 1

COMPUTED.Width: 1

COMPUTED.IsColor: 1

COMPUTED.ByteOrderMotorola: 1

COMPUTED.UserComment: Exif test image.

COMPUTED.UserCommentEncoding: ASCII

COMPUTED.Copyright: Photo (c) M.Boerger, Edited by M.Boerger.

COMPUTED.Copyright.Photographer: Photo (c) M.Boerger

COMPUTED.Copyright.Editor: Edited by M.Boerger.

IFD0.Copyright: Photo (c) M.Boerger

IFD0.UserComment: ASCII

THUMBNAIL.JPEGInterchangeFormat: 134

THUMBNAIL.JPEGInterchangeFormatLength: 523

COMMENT.0: Comment #1.

COMMENT.1: Comment #2.

COMMENT.2: Comment #3end

THUMBNAIL.JPEGInterchangeFormat: 134

THUMBNAIL.Thumbnail.Height: 1

5 6 7 8 9 10 11 12 13

echo "test1.jpg:
n"; $exif = exif_read_data('tests/test1.jpg', 'IFD0'); echo $exif===false ? "No header data found.
n" : "Image contains headers
n"; $exif = exif_read_data('tests/test2.jpg', 0, true); echo "test2.jpg:
n"; foreach ($exif as $key => $section) { foreach ($section as $name => $val) { echo "$key.$name: $val
n"; } } ?>

　　输出结果如下　　?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

test1.jpg: No header data found. test2.jpg: FILE.FileName: test2.jpg FILE.FileDateTime: 1017666176 FILE.FileSize: 1240 FILE.FileType: 2 FILE.SectionsFound: ANY_TAG, IFD0, THUMBNAIL, COMMENT COMPUTED.html: width="1" height="1" COMPUTED.Height: 1 COMPUTED.Width: 1 COMPUTED.IsColor: 1 COMPUTED.ByteOrderMotorola: 1 COMPUTED.UserComment: Exif test image. COMPUTED.UserCommentEncoding: ASCII COMPUTED.Copyright: Photo (c) M.Boerger, Edited by M.Boerger. COMPUTED.Copyright.Photographer: Photo (c) M.Boerger COMPUTED.Copyright.Editor: Edited by M.Boerger. IFD0.Copyright: Photo (c) M.Boerger IFD0.UserComment: ASCII THUMBNAIL.JPEGInterchangeFormat: 134 THUMBNAIL.JPEGInterchangeFormatLength: 523 COMMENT.0: Comment #1. COMMENT.1: Comment #2. COMMENT.2: Comment #3end THUMBNAIL.JPEGInterchangeFormat: 134 THUMBNAIL.Thumbnail.Height: 1 THUMBNAIL.Thumbnail.Height: 1

　　以上所述就是本文的全部内容了，希望大家能够喜欢。

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