// query
$sql = "INSERT INTO tool (title,details) VALUES (:title,:details) ";
$q = $conn->prepare($sql);
$q->execute(array(':details'=>$details,
':title'=>$title));
整天纠结这个问题,终于搞定了。如果我使用上面的代码,它只会向数据库添加一个新帖子。这应该用于编辑帖子,所以显然我需要编辑现有信息:
// query
$post = htmlspecialchars($_GET['story']);
$sql = "UPDATE tool SET (title,details) VALUES (:title,:details) WHERE id = $post";
$q = $conn->prepare($sql);
$q->execute(array(':details'=>$details,
':title'=>$title));
'id' 是数据库中的一列。我需要它来更新该特定帖子的标题和详细信息。我只是不确定我应该在这里使用什么语法。
感谢您的任何回答!
===== 第二个问题:
现在我回到了我的旧错误。每当我编辑帖子时,它只会丢失一次标题和详细信息。第一次编辑帖子时,我会丢失所有信息,但其他时候它会正常工作。知道为什么吗?继承人的代码:
来自编辑页面的表格(可能重要也可能不重要,我不知道):
$name = $_SESSION['Username'];
if (in_array($name, $allowedposters)) {
$results = mysql_query("SELECT * FROM tool WHERE id = $post");
while($row = mysql_fetch_array($results)){
$title= $row['title'];
$details= $row['details'];
$date= $row['date'];
$author= $row['author'];
$id= $row['id'];
echo "<a href=story.php?id=";
echo $post;
echo ">Cancel edit</a> <br><br><b>";
echo $title;
echo "</b> <br><br>";
echo '
<form action="edit-new.php?story=';
echo $id;
echo '" method="post" enctype="multipart/form-data">
<textarea rows="1" cols="60" name="title" wrap="physical" maxlength="100">';
echo $title;
echo '</textarea><br>';
?>
<textarea rows="30" cols="60" name="details" wrap="physical" maxlength="10000">
<?php
echo $details;
echo '</textarea><br>';
echo '<label for="file">Upload featured image:</label><br>
<input type="file" name="file" id="file" />';
echo'<br><input type="submit" />';
}
} else {
echo "Not enough permissions.";
}
?>
这是插入数据库的 SQL:
<?php
$post = htmlspecialchars($_GET['story']);
$title = mysql_real_escape_string($_POST['title']);
$details = mysql_real_escape_string($_POST['details']);
echo "B<br>";
echo $_POST['title'];
echo '<br>';
echo $_POST['details'];
echo $post;
echo "<br><br>";
// configuration
$dbtype = "mysql";
$dbhost = "localhost";
$dbname = "zzzz";
$dbuser = "zzzzz";
$dbpass = "zzzzzz";
// database connection
$conn = new PDO("mysql:host=$dbhost;dbname=$dbname",$dbuser,$dbpass);
// new data
// query
$sql = "UPDATE tool SET title=:title, details=:details WHERE id = :postid";
$q = $conn->prepare($sql);
$q->execute(array(
':details'=>$details,
':title'=>$title,
':postid' => $post
));
?>