php通過exif_read_data函數擷取圖片的exif資訊_PHP教程

php通過exif_read_data函數擷取圖片的exif資訊

　　這篇文章主要介紹了php通過exif_read_data函數擷取圖片的exif資訊，預設情況下，PHP讀取圖片Exif資訊模組是不開啟的，我們需要先開啟這個模組。開啟Exif模組需要mbstring支援，這裡就不詳細說明了，我們來先看下函數的用法

　　php擷取圖片的exif資訊，php內建一個exif_read_data函數可以用來讀取圖片的exif資訊，代碼來自php手冊

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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"; } } ?>

　　輸出結果如下

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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

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