我试着用准备好的陈述来做所有的查询,但对我来说是新的,我有一些麻烦。这是第一个查询,并且不会从表中回显结果。这是我到目前为止所做的。可能是真正的新手问题但对我来说是全新的。
if(isset($_GET['joke_id'])){
$joke_id = $_GET['joke_id'];
$qry = $con->prepare("SELECT * FROM joke WHERE joke_cat = ?");
$qry->bind_param('i', $joke_id);
$qry->execute();
$result = $qry->get_result();
$result->fetch_array();
$result = mysqli_query($con, $qry) or die("Query failed: " . mysqli_errno($con));*/
$line = mysqli_fetch_array($result, MYSQL_BOTH);
if (!$line) echo '';
$previd = -1;
$currid = $line[0];
if (isset($_GET['id'])) {
$previous_ids = array();
do {
$previous_ids[] = $line[0];
$currid = $line[0];
if ($currid == $_GET['id']) break;
$previd = end($previous_ids);
$line = mysqli_fetch_array($result, MYSQL_BOTH);
} while ($line);
}
if ($line) {
echo "<div id=\"box\">";
echo nl2br($line['text']) . "<br /><br />";
echo "<div id=\"share\"><span class='st_facebook' displayText='Facebook'></span>
<span class='st_twitter' displayText='Tweet'></span>
<span class='st_googleplus' displayText='Google +'></span></div>";
echo '<br /><br /><br />';
echo "</div>";
}
else echo '<p>Empty category</p><br/>';
这是我以前使用的方法来尝试PDO,它没有任何问题。
qry = "SELECT * FROM joke WHERE joke_cat = '$joke_id'";
$result = mysqli_query($con, $qry) or die("Query failed: " . mysqli_errno($con));
答案 0 :(得分:1)
$_GET['joke_id']
和$_GET['joke_cat']
已设置?
或尝试
$qry = $con->prepare("SELECT * FROM joke WHERE joke_cat =:joke_cat");
$qry->bindParam(':joke_cat', $_GET['joke_cat'], PDO::PARAM_STR);
$qry->execute();
$result = $qry->fetchAll();