PHP Manual
ID3
Predefined Constants

Predefined Constants

Most of the id3 functions either let you specify or return a tag version. In order to specify the version please use on of these constants.

ID3_V1_0 ( integer): ID3_V1_0 is used if you are working with ID3 V1.0 tags. These tags may contain the fields title, artist, album, genre, year and comment.
ID3_V1_1 ( integer): ID3_V1_1 is used if you are working with ID3 V1.1 tags. These tags may all information contained in v1.0 tags plus the track number.
ID3_V2_1 ( integer): ID3_V2_1 is used if you are working with ID3 V2.1 tags.
ID3_V2_2 ( integer): ID3_V2_2 is used if you are working with ID3 V2.2 tags.
ID3_V2_3 ( integer): ID3_V2_3 is used if you are working with ID3 V2.3 tags.
ID3_V2_4 ( integer): ID3_V2_4 is used if you are working with ID3 V2.4 tags.
ID3_BEST ( integer): ID3_BEST is used if would like to let the id3 functions determine which tag version should be used.

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