<?php

# getMP3info.php



// ===== Получение информации о mp3-файле ======================================

function getMP3data($filename) {

$ret = array();

    $ret['filename'] = $filename;

if (!@$f = fopen($filename, 'rb')) {

$ret['error'] = 'Error opening file.';

return $ret;

}

// Определение ID3 тегов

if ($s = getID3v1($filename)) { $ret['id3v1'] = $s; }

if ($s = getID3v2($filename)) { $ret['id3v2'] = $s; }



// Если есть id3v2 тег, то перед поиском mp3 фрейма сдвигаем указатель файла за id3v2 тег

if ($ret['id3v2']['size']) { fseek($f, $ret['id3v2']['size'] + 10); }



// Ищем mp3 фрейм. - 11111111-11111111-1111111? (0xFFF(E))

do {

while (fread($f, 1) != chr(255)) {

if (feof($f)) {

$ret['error'] = 'MP3 frame not found.';

return $ret;

}

}

$s = fread($f, 3);

$header = sprintf('%08b%08b%08b%08b', 255, ord($s[0]), ord($s[1]), ord($s[2]));

} while ($header[0] != 1 && $header[1] != 1 && $header[2] != 1) ;



// Нашли первый mp3 фрейм. Читаем информацию

if ($header[11] == 0) {

$ret['id'] == 'MPEG-2.5';

} else {

if ($header[12] == 1) { $ret['id'] = 'MPEG-1'; } else { $ret['id'] = 'MPEG-2'; }

}



$layers = array(

array(0, 3),

array(2, 1)

);



$ret['layer'] = $layers[$header[13]][$header[14]];



if ($header[15] == 0) {$ret['protect_CRC'] = true; }



$bitrates['MPEG-1'] = array(

1 => array(0, 32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448),// MPEG-1 Layer I

2 => array(0, 32, 48, 56,  64,  80,  96, 112, 128, 160, 192, 224, 256, 320, 384),// MPEG-1 Layer II

3 => array(0, 32, 40, 48,  56,  64,  80,  96, 112, 128, 160, 192, 224, 256, 320) // MPEG-1 Layer III

);

$bitrates['MPEG-2'] = array(

1 => array(0, 32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448),// MPEG-2 Layer I

2 => array(0, 32, 48, 56,  64,  80,  96, 112, 128, 160, 192, 224, 256, 320, 384),// MPEG-2 Layer II

3 => array(0, 8,  16, 24,  32,  64,  80,  56,  64, 128, 160, 112, 128, 256, 320) // MPEG-2 Layer III

);

$bitrates['MPEG-2.5'] = array(

1 => array(0, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256, 0),// MPEG-2.5 Layer I

2 => array(0,  8, 16, 24, 32, 40, 48,  56,  64,  80,  96, 112, 128, 144, 160, 0),// MPEG-2.5 Layer II

3 => array(0,  8, 16, 24, 32, 40, 48,  56,  64,  80,  96, 112, 128, 144, 160, 0) // MPEG-2.5 Layer III

);



$ret['bitrate'] = $bitrates[$ret['id']][$ret['layer']][bindec($header[16].$header[17].$header[18].$header[19])];



    $frequency = array(

'MPEG-1' => array(

'0' => array(44100, 48000),

'1' => array(32000, 0),

),

'MPEG-2' => array(

'0' => array(22050, 24000),

'1' => array(16000, 0),

),

'MPEG-2.5' => array(

'0' => array(11025, 12000),

'1' => array(8000, 0),

),

);

    $ret['frequency'] = $frequency[$ret['id']][$header[20]][$header[21]];

    $ret['padding'] = $header[22];



$samplesPerFrame = array(

'MPEG-1' => array(1 => 384, 2 => 1152, 3 => 1152),

'MPEG-2' => array(1 => 384, 2 => 1152, 3 => 576),

'MPEG-2.5' => array(1 => 384, 2 => 1152, 3 => 576)

);



$modes = array(

0 => array('Stereo', 'Joint stereo'),

1 => array('Dual channel', 'Mono')

);



$ret['mode'] = $modes[$header[24]][$header[25]];

    // Если режим = Joint Stereo

    if ($header[24] == 0 && $header[25] == 1) {

    $ret['Intensity stereo'] = $header[26];

    $ret['MS stereo'] = $header[27];

    }



$ret['Copyrighted'] = $header[28];

$ret['Original'] = $header[29];



$emphasises = array(

0 => array('None', '50/15ms'),

1 => array('', 'CCITT j.17')

);



$ret['Emphasis'] = $emphasises[$header[30]][$header[31]];

// =============================================================================

if ($ret['Mode'] != 'Mono' && $ret['id'] == 'MPEG-1') { $offset = 32; }

else if ($ret['Mode'] == 'Mono' && $ret['id'] == 'MPEG-1') { $offset = 17; }

else if ($ret['Mode'] == 'Mono' && ($ret['id'] == 'MPEG-2' || $ret['id'] == 'MPEG-2.5')) { $offset = 9; }

else { $offset = 17; }



fseek($f, $offset, SEEK_CUR);

$s = fread($f, 38);



if (substr($s, 0, 4) == 'VBRI') {

$ret['bitrate_mode'] = 'VBR';

$ret['VBR_header'] = 'VBRI';

$numberOfFrames = bindec(sprintf('%08b%08b%08b%08b', ord($s[14]),ord($s[15]),ord($s[16]),ord($s[17])));

    $ret['nof'] = $numberOfFrames;

    $duration = floor($numberOfFrames * $samplesPerFrame[$ret['id']][$ret['layer']] / $ret['frequency']);

} else

if (substr($s, 0, 4) == 'Xing') {

$ret['bitrate_mode'] = 'VBR';

$ret['VBR_header'] = 'Xing';





$numberOfFrames = bindec(sprintf('%08b%08b%08b%08b', ord($s[8]),ord($s[9]),ord($s[10]),ord($s[11])));

    $duration = floor($numberOfFrames * $samplesPerFrame[$ret['id']][$ret['layer']] / $ret['frequency']);

} else {

$ret['bitrate_mode'] = 'CBR';

    $datasize = filesize($filename);

    if ($ret['id3v1']) { $datasize -= 128; }

    if ($ret['id3v2']) { $datasize -= $ret['id3v2']['size'] - 10; }

    $duration = floor($datasize / ($ret['bitrate'] * 1000) * 8);

}



$ret['duration_str'] = sprintf('%02d:%02d',floor($duration/60),floor($duration-(floor($duration/60)*60)));

$ret['duration_str_hour'] = sprintf('%02d:%02d:%02d',floor($duration/3600),floor($duration/60),floor($duration -(floor($duration/60)*60)));

$ret['diration']= (int)$duration;



fclose($f);

return $ret;

}

// ===== Получение информации о ID3v2 тегах ====================================

function getID3v2($filename) {

$ret = array();

if (!@$f = fopen($filename, 'rb')) {

$ret['error'] = 'Error opening file.';

return $ret;

}



$header = fread($f, 10);

$header = @unpack("a3signature/c1version_major/c1version_minor/c1flags/Nsize", $header);

if ($header['signature'] != 'ID3') {

    fclose($f);

return false;

}

$ret['version'] = $header['version_major']. '.' .$header['version_minor'];

$bsize = sprintf('%032b', $header['size']);

$ret['size'] = bindec(substr($bsize, 1, 7).substr($bsize, 9, 7).substr($bsize, 17, 7).substr($bsize, 25, 7));



    fclose($f);

return $ret;

}

// ===== Получение информации о ID3v1 тегах ====================================

function getID3v1($filename) {

$ret = array();

$f = fopen($filename, 'rb');

if (!@$f = fopen($filename, 'rb')) {

$ret['error'] = 'Error opening file.';

return $ret;

}

fseek($f, -128, SEEK_END);

$s = fread($f,128);

if ($s[125] == chr(0) && $s[126] != chr(0)) {

    // ID3v1.1

    $format = 'a3tag/a30name/a30artists/a30album/a4year/a28comment/x1/c1track/c1genreno';

} else {

    // ID3v1.0

    $format = 'a3tag/a30name/a30artists/a30album/a4year/a30comment/c1genreno';

}



$ret = unpack($format, $s);



fclose($f);

if ($ret['tag'] == 'TAG') { return $ret; }

return false;

}



?>

<?php

include('getMP3info.php');

echo '<pre>';

$info = getMP3data('music.mp3');// mp3 manzili

print_r($info);

echo '</pre>';

// kerakli joyga pasdagi ko`dni qo`yamiz

echo 'Albom: '.$info['id3v1']['album'].'<br>';

echo 'Bitreyt: '.$info['bitrate'];

?>

Array

(

    [filename] => music.mp3

    [id3v1] => Array

        (

            [tag] => TAG

            [name] => Rapture (Avicii New Generation

            [artists] => Nadia Ali

            [album] => Rapture

            [year] => 2010

            [comment] => 

            [track] => 1

            [genreno] => 31

        )



    [id3v2] => Array

        (

            [version] => 3.0

            [size] => 2518

        )



    [id] => MPEG-1

    [layer] => 3

    [bitrate] => 320

    [frequency] => 44100

    [padding] => 0

    [mode] => Joint stereo

    [Intensity stereo] => 0

    [MS stereo] => 0

    [Copyrighted] => 0

    [Original] => 1

    [Emphasis] => None

    [bitrate_mode] => CBR

    [duration_str] => 03:41

    [duration_str_hour] => 00:03:41

    [diration] => 221

)

Albom: Rapture

Bitreyt: 320