我有这个简单的插入查询，基本上将一行添加到db表。但它不仅添加了行，而且还没有重定向。我尝试通过javaScript重定向，它被重定向但仍然没有添加行。该页面现场： http://arj-profile.com/public/new_subject.php （当您转到链接时，单击关于小部件，然后单击添加主题。
我最初在mamp上尝试这个，我也试过在php.ini上启用输出缓冲，但仍然没有运气。
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表单页面包含以下代码：
<!-- including functions -->
<?php include("../includes/db_connect.php") ?>
<?php require_once("../includes/functions.php"); ?>
<!-- query -->
<!-- end of query -->
<!-- including header -->
<?php include("../includes/header.php") ?>
<?php find_selected_page();?>
<div class="container-fluid">
<div class="row">
<!-- menu -->
<div class="col-md-3 sidebar">
<?php echo navigation(); ?>
</div>
<!-- body -->
<div class="col-md-9 body">
<form action="create_subject.php" method="post">
<p>Subject name:
<input type="text" name="menu_name" value=""/>
<p>
<p>Position
<select name="position">
<?php
$subject_set = find_all_subjects();
$subject_count = mysqli_num_rows ($subject_set);
for ($count = 1; $count <= ($subject_count + 1); $count++){
echo "<option value=\"{$count}\">{$count}</option>";
}
?>
</select>
</p>
<p>Visible:
<input type="radio" name="visible" value="0" />No
 
<input type="radio" name="visible" value="1" />Yes
</p>
<input type="submit" name="submit" value="Submit">
</p>
<br />
<!-- redirect -->
<a href="manage-content.php">Cancel</a>
</form>
</div>
</div>
</div>
<!-- footer -->
<?php include("../includes/footer.php") ?>
请尝试添加但填写表单，如您所见它转到下一页实际包含查询但不应该去那里，它应该只是重定向回create_subject.php。
<?php include("../includes/db_connect.php") ?>
<?php require_once("../includes/functions.php"); ?>
<?php
if (isset($_POST['submit'])){
$menu_name = mysqli_prep($_POST["menu_name"]);
$position = (int) $_POST["position"];
$visible = (int) $_POST["visible"];
$menu_name = mysqli_prep($menu_name);
$query = "insert into subjects(";
$query = " menu_name, position, visible";
$query = ") values (";
$query = " '{$menu_name}', {$position}, {$visible}";
$query = ")";
$result = mysqli_query($connection, $query);
if ($result){
$msg = "Subject created";
redirect_to("manage_subject.php");
}
}else {
$msg = "Subject creation failed";
redirect_to("new_subject.php");
}
?>
<?php
if (isset($connection)){mysqli_close($connection); }
?>
在我的function.php中我有：
<?php
function redirect_to($new_location){
header("Location: " . $new_location);
exit;
}
function mysqli_prep($string){
global $connection;
$escape_string = mysqli_real_escape_string($cnnection, $string);
return $escape_string;
}
function confirm_query($result_set){
if (!$result_set){
die("DB Query Failed");
}
}
function find_all_subjects(){
global $connection;
$query = "select * ";
$query .= "from subjects ";
$query .= "where visible = 1 ";
$query .= "order by position asc";
$subject_set = mysqli_query($connection, $query);
confirm_query($subject_set);
return $subject_set;
}
function find_pages_for_subjects($subject_id){
global $connection;
$safe_subject_id = mysqli_real_escape_string($connection, $subject_id);
$query = "select * ";
$query .= "from pages ";
$query .= "where visible = 1 ";
// an aditional line to relate pages to the subject, subject_id is what rlate two tables together
// dont forget space between lines
$query .= "AND subject_id = {$safe_subject_id} ";
$query .= "order by position asc";
$page_set = mysqli_query($connection, $query);
// the result captured can not be used twice for two different queries
// so result varibale should have unique names
confirm_query($page_set);
return $page_set;
}
function find_subject_by_id($subject_id){
global $connection;
$safe_subject_id = mysqli_real_escape_string($connection, $subject_id);
$query = "select * ";
$query .= "from subjects ";
$query .= "where id = {$safe_subject_id} ";
$query .= "limit 1";
$subject_set = mysqli_query($connection, $query);
confirm_query($subject_set);
if ($subject = mysqli_fetch_assoc($subject_set)){
return $subject;
}else {
return null;
}
}
function find_page_by_id($page_id){
global $connection;
$safe_page_id = mysqli_real_escape_string($connection, $page_id);
$query = "select * ";
$query .= "from pages ";
$query .= "where id = {$safe_page_id} ";
$query .= "limit 1";
$page_set = mysqli_query($connection, $query);
confirm_query($page_set);
if ($page = mysqli_fetch_assoc($page_set)){
return $page;
}else {
return null;
}
}
function find_selected_page(){
global $current_subject;
global $current_page;
if (isset($_GET["subject"])){
$current_subject = find_subject_by_id($_GET["subject"]);
$current_page = null;
} elseif (isset($_GET["page"])){
$current_page = find_page_by_id($_GET["page"]);
$current_subject = null;
} else{
$current_subject = null;
$current_page = null;
}
}
function navigation(){
$output = "<ul>";
$subject_set = find_all_subjects();
while($subject = mysqli_fetch_assoc($subject_set)){
$output .= "<li><a href=\"manage-content.php?subject=";
$output .= urlencode($subject["id"]);
$output .= "\">";
$output .= $subject["menu_name"];
$output .= "</a>";
$page_set = find_pages_for_subjects($subject["id"]);
$output .= "<ul>";
while($page = mysqli_fetch_assoc($page_set)){
$output .= "<li><a href=\"manage-content.php?page=";
$output .= urlencode($page["id"]);
$output .= "\">";
$output .= $page["menu_name"];
$output .= "</a></li>";
}
mysqli_free_result($page_set);
$output .= "</ul></li>";
}
mysqli_free_result($subject_set);
$output .= "</ul>";
return $output;
}
?>
答案 0 :(得分：0)
function mysqli_prep( $string ){
global $connection;
return mysqli_real_escape_string( $connection, $string );
}
<?php include("../includes/db_connect.php") ?>
<?php require_once("../includes/functions.php"); ?>
<?php
$redir='new_subject.php';
if ( $_SERVER['REQUEST_METHOD']=='POST' && isset( $_POST['submit'] ) ){
$menu_name = mysqli_prep( $_POST["menu_name"] );
$position = (int) $_POST["position"];
$visible = (int) $_POST["visible"];
$query = "insert into subjects
( menu_name, position, visible )
values
( '{$menu_name}', {$position}, {$visible} )";
$result = mysqli_query( $connection, $query );
if ( $connection ) mysqli_close( $connection );
if( $result ) $redir='manage_subject.php';
}
redirect_to( $redir );
?>