请问一下大神，这段 PHP 代码上传 TXT 的格式什么意思啊？

[kkljsj]

$txt = $info['txt']['savename'];
$content = file_get_contents('Public/Uploads/book/' . $txt);
$array = explode("###", $content);
array_shift($array);
$arr = array();
foreach ($array as $k => $v) {
$c = explode("
", $v);
$d = explode($c[0], $v);
$d[0] = $c[0];
array_push($arr, $d);
}
foreach ($arr as $k2 => & $v2) {
$v2[1] = str_replace("
", "</p><p>", $v2[1]);
$v2[1] = substr($v2[1], 11);
$v2[1] = substr($v2[1], 0, strlen($v2[1]) - 10);
}
foreach ($arr as $ka => $va) {
$w2['title2'] = $va[0];
$w2['content'] = $va[1];
$w2['number'] = $ka + 1;
$bi->add($w2);
}