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我真的需要關於排序和分頁的幫助。帶分頁的PHP排序結果
我讀過一些其他我需要會話的帖子，但我不知道它是如何工作的。
這是我的代碼排序和移動到下一頁和上一頁。
<?php
$sql = "SELECT * FROM movies";
if (isset($_GET['sort']) == 'year')
{
$sql .= " ORDER BY year";
}
elseif (isset($_GET['sort']) == 'IMDBrating')
{
$sql .= " ORDER BY IMDBrating";
}
elseif (isset($_GET['sort']) == 'userrating')
{
$sql .= " ORDER BY userrating";
}
?>
<th><a href="http://localhost/New folder (3)/index.php?sort=year">Year</a></th>
<th><a href="http://localhost/New folder (3)/index.php?sort=IMDBrating">IMDB rating</a></th>
<th><a href="http://localhost/New folder (3)/index.php?sort=userrating">user rating</a></th>
<?php
$pagesize = 5;
$recordstart = (int)(isset($_GET['recordstart'])) ? $_GET['recordstart'] : 0;
$sql01 = "SELECT * FROM movies ORDER BY year DESC LIMIT $recordstart, $pagesize";
$records=mysql_query($sql01);
$result = mysql_query("SELECT count(id) FROM movies");
$totalrows = mysql_fetch_row($result);
while ($movies=mysql_fetch_array($records)){
echo '<div class="movie_box"><p><div class="news_img"><div class="cover"><img src="'.$movies['cover'].'" width = "183px" height = "271px"/></div><br><button class="trailer_button" type="button">Trailer</button></div><strong><p class="h3"><div class="content">'.$movies['name'].'</p></strong>'.$movies['plot'].'<br><br><strong>Žanr</strong>:'.$movies['genre'].'<br><strong>IMDB ocjena</strong>:'.$movies['IMDBrating'].'<br><strong>Director</strong>:'.$movies['director'].'<br><strong>Glumci</strong>:'.$movies['Starring'].'<br><strong>Ocjena korisnika</strong>:</div><br><div class="trailer">'.$movies['trailer'].'</div><div class="dark"></div></p></div>';
}
if ($recordstart > 0){
$prev = $recordstart - $pagesize;
$url = $_SERVER['PHP_SELF'].'?recordstart='.$prev;
printf('<a id="prev" href="%s"><</a>',$url);
}
if ($totalrows > ($recordstart + $pagesize)){
$next = $recordstart + $pagesize;
$url = $_SERVER['PHP_SELF'].'?recordstart='.$next;
printf('<a id="next" href="%s">></a>',$url);
}
?>