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id3_get_version

(PECL)

id3_get_version -- Get version of an ID3 tag

说明

int id3_get_version ( string filename )

id3_get_version() retrieves the version(s) of the ID3 tag(s) in the MP3 file.

If a file contains an ID3 v1.1 tag, it always contains a 1.0 tag, as version 1.1 is just an extension of 1.0.

参数

filename

The path to the MP3 file

Instead of a filename you may also pass a valid stream resource

返回值

Returns the version number of the ID3 tag of the file. As a tag can contain ID3 v1.x and v2.x tags, the return value of this function should be bitwise compared with the predefined constants ID3_V1_0, ID3_V1_1 and ID3_V2.

范例

例 1. id3_get_version() example

<?php
$version = id3_get_version( "path/to/example.mp3" );
if ($version & ID3_V1_0) {
    echo "Contains a 1.x tag\n";
}
if ($version & ID3_V1_1) {
    echo "Contains a 1.1 tag\n";
}
if ($version & ID3_V2) {
    echo "Contains a 2.x tag\n";
}
?>

上例的输出类似于：

Contains a 1.x tag
Contains a 1.1 tag

参见

id3_set_tag()
id3_get_tag()
id3_remove_tag()

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