D'

$result = [];
foreach ($arr as $key => $values) {
    foreach ($values as $index => $val) {
        $result[$index][$key] = $val;
    }
}

id: 1, last_updated: 1524855575, price: 5000
id: 2, last_updated: 1524855575, price:5000.

/bin
/sbin
/usr/bin
/usr/local/bin
/opt

$(document).ready(function(){ 
      show('getTrack.php',$('#song-title'));
      setInterval(function() { show('getTrack.php',$('#song-title')); } ,5000);
});