我是PHP新手,并且在排序时遇到了一些麻烦。用下拉菜单对电影进行排序
我有一个电影页面已经按流派排序,并在该页面内我希望能够按标题,评分和年份排序,我不知道该怎么做。
在索引页面中,我能够轻松地对影片进行排序,因为它们尚未按流派排序,所以我只需在查询中放入ORDER BY something
,并且它返回了我想要的内容。
现在的问题是,我要检查选择在那一刻,其风格,并与我从下拉列表中选择,我不知道该怎么做...关联
我不知道这是不是足够明确的,但如果你有任何疑问,请向我...
我有我从现有的问题在这里复制下面的代码:
<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']) && $_POST['sort_by'] == 'rating') echo 'selected="selected"'; ?> value="rating">Rating</option>
</select>
</div>
<form>
这是代码,我有它返回按流派排列的电影:
<?php
if (isset($_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
}
?>
这里的链接到当前网站: http://www.zoomlab.pt/2016-web2/pub/grupo4/index.php
在显示其可能没有问题排序的第一页。 问题在于当您点击左列中的一个流派时。它们会按类型排序,然后我无法通过工作获得的那种...
我最初尝试使用引导下拉但它使用<li><a>
代替<select>
和<option>
,所以我不知道是否有可能。
在此先感谢您的帮助。