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Example #1 Reading an OGG/Vorbis file
  <?php
dl ( "oggvorbis.so" );
 
 $fp  =  fopen ( 'ogg://myaudio.ogg' ,  'r' );
 
 $metadata  =  stream_get_meta_data ( $fp );
 
 $songdata  =  $metadata [ 'wrapper_data' ][ 0 ];
echo  "OGG/Vorbis file encoded by:  { $songdata [ 'vendor' ]} \n." ;
echo  "   { $songdata [ 'channels' ]}  channels of  { $songdata [ 'rate' ]} Hz sampling encoded at  { $songdata [ 'bitrate_nominal' ]} bps.\n" ;
foreach( $songdata [ 'comments' ] as  $comment ) {
    echo  "   $comment \n" ;
}
while ( $audio_data  =  fread ( $fp ,  8192 )) {
   
 }
 fclose ( $fp );
 ?>   
Example #2 Encode an audio file to OGG/Vorbis
  <?php
dl ( 'oggvorbis.so' );
 $context  =  stream_context_create (array( 'ogg' =>array(
              'pcm_mode'  =>  OGGVORBIS_PCM_S8 ,   
              'rate'  =>  44100 ,                  
              'bitrate'  =>  0.5 ,                 
              'channels'  =>  1 ,                  
              'serialno'  =>  12345 )));           
 $ogg  =  fopen ( 'ogg://mysong.ogg' ,  'a' ,  false ,  $context );
 $pcm  =  fopen ( 'mysample.pcm' ,  'r' );
 
 stream_copy_to_stream ( $pcm ,  $ogg );
 fclose ( $pcm );
 fclose ( $ogg );
 ?>