我是PHP新手,並且在排序時遇到了一些麻煩。用下拉菜單對電影進行排序
我有一個電影頁面已經按流派排序,並在該頁面內我希望能夠按標題,評分和年份排序,我不知道該怎麼做。
在索引頁面中,我能夠輕鬆地對影片進行排序,因爲它們尚未按流派排序,所以我只需在查詢中放入ORDER BY something
,並且它返回了我想要的內容。
現在的問題是,我要檢查選擇在那一刻,其風格,並與我從下拉列表中選擇,我不知道該怎麼做...關聯
我不知道這是不是足夠明確的,但如果你有任何疑問,請向我...
我有我從現有的問題在這裏複製下面的代碼:
<form class="sortby_form" action="">
<div class="sortby" method="POST">
<select name="sort_by" class="drop-box">
<option selected hidden <?php if(isset($_POST['sort_by']) && $_POST['sort_by'] == 'option') echo 'selected="selected"'; ?> value="option">Sort by</option>
<option <?php if(isset($_POST['sort_by']) && $_POST['sort_by'] == 'title') echo 'selected="selected"'; ?> value="title">Title</option>
<option <?php if(isset($_POST['sort_by']) && $_POST['sort_by'] == 'year') echo 'selected="selected"'; ?> value="year">Year</option>
<option <?php if(isset($_POST['sort_by']) && $_POST['sort_by'] == 'rating') echo 'selected="selected"'; ?> value="rating">Rating</option>
</select>
</div>
<form>
這是代碼,我有它返回按流派排列的電影:
<?php
if (isset($_REQUEST["g"])) {
$g = $_REQUEST["g"];
} else {
$g=0;}
$q_sortg = "SELECT id_movie, title, image, plot, rating, id_genre, genre
FROM movie_genre AS mg
INNER JOIN movie AS m ON mg.movie_id_movie = m.id_movie
INNER JOIN genre AS g ON mg.genre_id_genre = g.id_genre
WHERE id_genre = '$g'";
$r_sortg = mysqli_query($dbc, $q_sortg);
$i=0;
echo '<div class="row row-eq-height">';
while ($row_sortg = mysqli_fetch_array($r_sortg)) {
if($row_sortg['id_genre'] == $g) {
echo '<div class="col-sm-3 col-lg-3 col-md-3 column">';
echo '<div class="thumbnail movie-box">';
echo '<a href="movies_info.php?m='.$row_sortg['id_movie'].'"><img src="data:image/jpg;base64,'.base64_encode($row_sortg['image']).'" width="250px" height="300px" /></a>';
echo '<div class="caption">';
echo "<h4 class=\"title-subs\"><a href='movies_info.php?m=".$row_sortg['id_movie']."'>".$row_sortg['title']."</a></h4>";
echo "<p class=\"title-subs\">".$row_sortg['plot']."</p>";
echo "</div>";
echo '<div class="ratings align-center">';
echo '<p>';
$ratings = $row_sortg['rating'];
$rates = array('$row_sortg' => $ratings);
foreach ($rates as $r => $value) {
if($value <= 1.0){
echo '<p>'.$value.'</p>';
echo '<i class="fa fa-star-half-o" aria-hidden="true"></i>';
echo '<i class="fa fa-star-o" aria-hidden="true"></i>';
echo '<i class="fa fa-star-o" aria-hidden="true"></i>';
echo '<i class="fa fa-star-o" aria-hidden="true"></i>';
echo '<i class="fa fa-star-o" aria-hidden="true"></i>';
}
else if($value <= 2.0){
echo '<p>'.$value.'</p>';
echo '<i class="fa fa-star" aria-hidden="true"></i>';
echo '<i class="fa fa-star-o" aria-hidden="true"></i>';
echo '<i class="fa fa-star-o" aria-hidden="true"></i>';
echo '<i class="fa fa-star-o" aria-hidden="true"></i>';
echo '<i class="fa fa-star-o" aria-hidden="true"></i>';
}
else if($value <= 3.0){
echo '<p>'.$value.'</p>';
echo '<i class="fa fa-star" aria-hidden="true"></i>';
echo '<i class="fa fa-star-half-o" aria-hidden="true"></i>';
echo '<i class="fa fa-star-o" aria-hidden="true"></i>';
echo '<i class="fa fa-star-o" aria-hidden="true"></i>';
echo '<i class="fa fa-star-o" aria-hidden="true"></i>';
}
else if($value <= 4.0){
echo '<p>'.$value.'</p>';
echo '<i class="fa fa-star" aria-hidden="true"></i>';
echo '<i class="fa fa-star" aria-hidden="true"></i>';
echo '<i class="fa fa-star-o" aria-hidden="true"></i>';
echo '<i class="fa fa-star-o" aria-hidden="true"></i>';
echo '<i class="fa fa-star-o" aria-hidden="true"></i>';
}
else if($value <= 5.0){
echo '<p>'.$value.'</p>';
echo '<i class="fa fa-star" aria-hidden="true"></i>';
echo '<i class="fa fa-star" aria-hidden="true"></i>';
echo '<i class="fa fa-star-half-o" aria-hidden="true"></i>';
echo '<i class="fa fa-star-o" aria-hidden="true"></i>';
echo '<i class="fa fa-star-o" aria-hidden="true"></i>';
}
else if($value <= 6.0){
echo '<p>'.$value.'</p>';
echo '<i class="fa fa-star" aria-hidden="true"></i>';
echo '<i class="fa fa-star" aria-hidden="true"></i>';
echo '<i class="fa fa-star" aria-hidden="true"></i>';
echo '<i class="fa fa-star-o" aria-hidden="true"></i>';
echo '<i class="fa fa-star-o" aria-hidden="true"></i>';
}
else if($value <= 7.0){
echo '<p>'.$value.'</p>';
echo '<i class="fa fa-star" aria-hidden="true"></i>';
echo '<i class="fa fa-star" aria-hidden="true"></i>';
echo '<i class="fa fa-star" aria-hidden="true"></i>';
echo '<i class="fa fa-star-half-o" aria-hidden="true"></i>';
echo '<i class="fa fa-star-o" aria-hidden="true"></i>';
}
else if($value <= 8.0){
echo '<p>'.$value.'</p>';
echo '<i class="fa fa-star" aria-hidden="true"></i>';
echo '<i class="fa fa-star" aria-hidden="true"></i>';
echo '<i class="fa fa-star" aria-hidden="true"></i>';
echo '<i class="fa fa-star" aria-hidden="true"></i>';
echo '<i class="fa fa-star-o" aria-hidden="true"></i>';
}
else if($value <= 9.0){
echo '<p>'.$value.'</p>';
echo '<i class="fa fa-star" aria-hidden="true"></i>';
echo '<i class="fa fa-star" aria-hidden="true"></i>';
echo '<i class="fa fa-star" aria-hidden="true"></i>';
echo '<i class="fa fa-star" aria-hidden="true"></i>';
echo '<i class="fa fa-star-half-o" aria-hidden="true"></i>';
}
else if($value <= 10.0){
echo '<p>'.$value.'</p>';
echo '<i class="fa fa-star" aria-hidden="true"></i>';
echo '<i class="fa fa-star" aria-hidden="true"></i>';
echo '<i class="fa fa-star" aria-hidden="true"></i>';
echo '<i class="fa fa-star" aria-hidden="true"></i>';
echo '<i class="fa fa-star" aria-hidden="true"></i>';
}
}//fecha o foreach
echo '</p>';
echo '</div>';
echo "</div>";
echo "</div>";
$i++;
if ($i%4 == 0){
echo '</div><div class="row row-eq-height">';
} //fecha o if
} //fecha o While
}
?>
這裏的鏈接到當前網站: http://www.zoomlab.pt/2016-web2/pub/grupo4/index.php
在顯示其可能沒有問題排序的第一頁。 問題在於當您點擊左列中的一個流派時。它們會按類型排序,然後我無法通過工作獲得的那種...
我最初嘗試使用引導下拉但它使用<li><a>
代替<select>
和<option>
,所以我不知道是否有可能。
在此先感謝您的幫助。