Php uses the exif_read_data function to obtain the exif information of an image _ PHP Tutorial

Php uses the exif_read_data function to obtain the exif information of an image. Php uses the exif_read_data function to obtain the exif information of an image. This article mainly introduces how php obtains the exif information of an image through the exif_read_data function. by default, PHP reads Image Exif information. php uses the exif_read_data function to obtain Image exif information.

This article describes how to use the exif_read_data function in php to obtain the exif information of an image. by default, PHP does not enable the Exif information module for reading images. we need to enable this module first. Enabling the Exif module requires the support of mbstring, which is not described in detail here. let's take a look at the usage of the function.

Php obtains the exif information of the image. php comes with an exif_read_data function that can be used to read the exif information of the image. the code is from the php Manual.

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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 "; } } ?>

The output result is as follows:

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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. fig: 134 THUMBNAIL. fig length: 523 COMMENT.0: Comment #1. COMMENT.1: Comment #2. COMMENT.2: Comment # 3end THUMBNAIL. fig: 134 THUMBNAIL. Thumbnail. Height: 1 THUMBNAIL. Thumbnail. Height: 1

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This article describes how php obtains the exif information of an image through the exif_read_data function. by default, PHP reads the Exif information of an image...