©
                    本文档使用
                    php中文网手册 发布
                
(PECL id3 >= 0.1)
id3_get_version — Get version of an ID3 tag
$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.
filename The path to the MP3 file
Instead of a filename you may also pass a valid stream resource
   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 .
  
Example #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" ;
}
 ?>   以上例程的输出类似于:
Contains a 1.x tag Contains a 1.1 tag