当我使用下面提供的代码时，我不断收到“此页面无法正常工作”的信息，我不知道该怎么办，我尝试将其更改为mysqli_fetch_assoc，但这使页面空白，非常感谢您的帮助，如果这还不够清楚，我也表示歉意，我还没有机会阅读stackoverflow示例。
server.php：
<?php
// connect to database
$conn = mysqli_connect('localhost', 'FardMuhammad', '', 'imgupload1');
// lets assume a user is logged in with id $user_id
$user_id = 2;
if (!$conn) {
die("Error connecting to database: " . mysqli_connect_error($conn));
exit();
}
// if user clicks like or dislike button
if (isset($_POST['action'])) {
$post_id = $_POST['post_id'];
$action = $_POST['action'];
switch ($action) {
case 'like':
$sql="INSERT INTO rating_info (user_id, post_id, rating_action)
VALUES ($user_id, $post_id, 'like')
ON DUPLICATE KEY UPDATE rating_action='like'";
break;
case 'bike':
$sql="INSERT INTO rating_info (user_id, post_id, rating_action)
VALUES ($user_id, $post_id, 'bike')
ON DUPLICATE KEY UPDATE rating_action='bike'";
break;
case 'star':
$sql="INSERT INTO rating_info (user_id, post_id, rating_action)
VALUES ($user_id, $post_id, 'star')
ON DUPLICATE KEY UPDATE rating_action='star'";
break;
case 'dislike':
$sql="INSERT INTO rating_info (user_id, post_id, rating_action)
VALUES ($user_id, $post_id, 'dislike')
ON DUPLICATE KEY UPDATE rating_action='dislike'";
break;
case 'disbike':
$sql="INSERT INTO rating_info (user_id, post_id, rating_action)
VALUES ($user_id, $post_id, 'disbike')
ON DUPLICATE KEY UPDATE rating_action='disbike'";
break;
case 'unstar':
$sql="INSERT INTO rating_info (user_id, post_id, rating_action)
VALUES ($user_id, $post_id, 'unstar')
ON DUPLICATE KEY UPDATE rating_action='unstar'";
break;
case 'unlike':
$sql="DELETE FROM rating_info WHERE user_id=$user_id AND post_id=$post_id";
break;
case 'unbike':
$sql="DELETE FROM rating_info WHERE user_id=$user_id AND post_id=$post_id";
break;
case 'unstar':
$sql="DELETE FROM rating_info WHERE user_id=$user_id AND post_id=$post_id";
break;
case 'undisbike':
$sql="DELETE FROM rating_info WHERE user_id=$user_id AND post_id=$post_id";
break;
case 'undislike':
$sql="DELETE FROM rating_info WHERE user_id=$user_id AND post_id=$post_id";
break;
default:
break;
}
// execute query to effect changes in the database ...
mysqli_query($conn, $sql);
echo getRating($post_id);
exit(0);
}
// Get total number of likes for a particular post
function getLikes($id)
{
global $conn;
$sql = "SELECT COUNT(*) FROM rating_info
WHERE post_id = $id AND rating_action='like'";
$rs = mysqli_query($conn, $sql);
$result = mysqli_fetch_array($rs);
return $result[0];
}
function getStars($id)
{
global $conn;
$sql = "SELECT COUNT(*) FROM rating_info
WHERE post_id = $id AND rating_action='star'";
$rs = mysqli_query($conn, $sql);
$result = mysqli_fetch_array($rs);
return $result[0];
}
function getBikes($id)
{
global $conn;
$sql = "SELECT COUNT(*) FROM rating_info
WHERE post_id = $id AND rating_action='bike'";
$rs = mysqli_query($conn, $sql);
$result = mysqli_fetch_array($rs);
return $result[0];
}
// Get total number of dislikes for a particular post
function getDisbikes($id)
{
global $conn;
$sql = "SELECT COUNT(*) FROM rating_info
WHERE post_id = $id AND rating_action='disbike'";
$rs = mysqli_query($conn, $sql);
$result = mysqli_fetch_array($rs);
return $result[0];
}
function getDisstars($id)
{
global $conn;
$sql = "SELECT COUNT(*) FROM rating_info
WHERE post_id = $id AND rating_action='unstar'";
$rs = mysqli_query($conn, $sql);
$result = mysqli_fetch_array($rs);
return $result[0];
}
// Get total number of dislikes for a particular post
function getDislikes($id)
{
global $conn;
$sql = "SELECT COUNT(*) FROM rating_info
WHERE post_id = $id AND rating_action='dislike'";
$rs = mysqli_query($conn, $sql);
$result = mysqli_fetch_array($rs);
return $result[0];
}
// Get total number of likes and dislikes for a particular post
function getRating($id)
{
global $conn;
$rating = array();
$likes_query = "SELECT COUNT(*) FROM rating_info WHERE post_id = $id AND rating_action='like'";
$bikes_query = "SELECT COUNT(*) FROM rating_info WHERE post_id = $id AND rating_action='bike'";
$stars_query = "SELECT COUNT(*) FROM rating_info WHERE post_id = $id AND rating_action='star'";
$dislikes_query = "SELECT COUNT(*) FROM rating_info
WHERE post_id = $id AND rating_action='dislike'";
$disbikes_query = "SELECT COUNT(*) FROM rating_info
WHERE post_id = $id AND rating_action='disbike'";
$unstars_query = "SELECT COUNT(*) FROM rating_info
WHERE post_id = $id AND rating_action='unstar'";
$likes_rs = mysqli_query($conn, $likes_query);
$stars_rs = mysqli_query($conn, $stars_query);
$bikes_rs = mysqli_query($conn, $bikes_query);
$dislikes_rs = mysqli_query($conn, $dislikes_query);
$unstars_rs = mysqli_query($conn, $unstars_query);
$disbikes_rs = mysqli_query($conn, $disbikes_query);
$likes = mysqli_fetch_array($likes_rs);
$stars = mysqli_fetch_array($stars_rs);
$bikes = mysqli_fetch_array($bikes_rs);
$dislikes = mysqli_fetch_array($dislikes_rs);
$unstars = mysqli_fetch_array($unstars_rs);
$disbikes = mysqli_fetch_array($disbikes_rs);
$rating = [
'likes' => $likes[0],
'bikes' => $bikes[0],
'stars' => $stars[0],
'dislikes' => $dislikes[0],
'disbikes' => $disbikes[0],
'unstars' => $unstars[0]
];
return json_encode($rating);
}
// Check if user already likes post or not
function userLiked($post_id)
{
global $conn;
global $user_id;
$sql = "SELECT * FROM rating_info WHERE user_id=$user_id
AND post_id=$post_id AND rating_action='like'";
$result = mysqli_query($conn, $sql);
if (mysqli_num_rows($result) > 0) {
return true;
}else{
return false;
}
}
function userBiked($post_id)
{
global $conn;
global $user_id;
$sql = "SELECT * FROM rating_info WHERE user_id=$user_id
AND post_id=$post_id AND rating_action='bike'";
$result = mysqli_query($conn, $sql);
if (mysqli_num_rows($result) > 0) {
return true;
}else{
return false;
}
}
function userStared($post_id)
{
global $conn;
global $user_id;
$sql = "SELECT * FROM rating_info WHERE user_id=$user_id
AND post_id=$post_id AND rating_action='star'";
$result = mysqli_query($conn, $sql);
if (mysqli_num_rows($result) > 0) {
return true;
}else{
return false;
}
}
// Check if user already dislikes post or not
function userDisliked($post_id)
{
global $conn;
global $user_id;
$sql = "SELECT * FROM rating_info WHERE user_id=$user_id
AND post_id=$post_id AND rating_action='dislike'";
$result = mysqli_query($conn, $sql);
if (mysqli_num_rows($result) > 0) {
return true;
}else{
return false;
}
}
// Check if user already dislikes post or not
function userDisbiked($post_id)
{
global $conn;
global $user_id;
$sql = "SELECT * FROM rating_info WHERE user_id=$user_id
AND post_id=$post_id AND rating_action='disbike'";
$result = mysqli_query($conn, $sql);
if (mysqli_num_rows($result) > 0) {
return true;
}else{
return false;
}
}
// Check if user already dislikes post or not
function unStars($post_id)
{
global $conn;
global $user_id;
$sql = "SELECT * FROM rating_info WHERE user_id=$user_id
AND post_id=$post_id AND rating_action='unstar'";
$result = mysqli_query($conn, $sql);
if (mysqli_num_rows($result) > 0) {
return true;
}else{
return false;
}
}
$sql = "SELECT * FROM posts";
$result = mysqli_query($conn, $sql);
// fetch all posts from database
// return them as an associative array called $posts
$posts = mysqli_fetch_all($result, MYSQLI_ASSOC);
index.php：
<div class='posts-wrapper'>
<?php foreach ($posts as $post): ?>
<div class='post'>
<div class='post-info'>
<!-- if user likes post, style button differently -->
<i <?php if (userLiked($post['id'])): ?>
class='fa fa-thumbs-up like-btn'
<?php else: ?>
class='fa fa-thumbs-o-up like-btn'
<?php endif ?>
data-id='<?php echo $post['id'] ?>'><img src='image.ico'></i>
<span class='likes'><?php echo getLikes($post['id']); ?></span>
<i <?php if (userStared($post['id'])): ?>
class='fa fa-star star-btn'
<?php else: ?>
class='fa fa-star-o star-btn'
<?php endif ?>
data-id='<?php echo $post['id']; ?> '><img src='image.ico'></i>
<span class='stars'><?php echo getStars($post['id']); ?></span>
</div>
</div>
<?php endforeach ?>
</div>
<script src="scripts.js"></script>
scripts.js：
$(document).ready(function(){
// if the user clicks on the like button ...
$('.like-btn').on('click', function(){
var post_id = $(this).data('id');
$clicked_btn = $(this);
if ($clicked_btn.hasClass('fa-thumbs-o-up')) {
action = 'like';
} else if($clicked_btn.hasClass('fa-thumbs-up')){
action = 'unlike';
}
$.ajax({
url: 'index.php',
type: 'post',
data: {
'action': action,
'post_id': post_id
},
success: function(data){
res = JSON.parse(data);
if (action == "like") {
$clicked_btn.removeClass('fa-thumbs-o-up');
$clicked_btn.addClass('fa-thumbs-up');
} else if(action == "unlike") {
$clicked_btn.removeClass('fa-thumbs-up');
$clicked_btn.addClass('fa-thumbs-o-up');
}
// display the number of likes and dislikes
$clicked_btn.siblings('span.likes').text(res.likes);
$clicked_btn.siblings('span.dislikes').text(res.dislikes);
// change button styling of the other button if user is reacting the second time to post
$clicked_btn.siblings('i.fa-thumbs-down').removeClass('fa-thumbs-down').addClass('fa-thumbs-o-down');
}
});
});
$('.star-btn').on('click', function(){
var post_id = $(this).data('id');
$clicked_btn = $(this);
if ($clicked_btn.hasClass('fa-star-o')) {
action = 'star';
} else if($clicked_btn.hasClass('fa-star')){
action = 'unstar';
}
$.ajax({
url: 'index.php',
type: 'post',
data: {
'action': action,
'post_id': post_id
},
success: function(data){
res = JSON.parse(data);
if (action == "star") {
$clicked_btn.removeClass('fa-star-o');
$clicked_btn.addClass('fa-star');
} else if(action == "unstar") {
$clicked_btn.removeClass('fa-star');
$clicked_btn.addClass('fa-star-o');
}
// display the number of likes and dislikes
$clicked_btn.siblings('span.stars').text(res.stars);
$clicked_btn.siblings('span.disstars').text(res.disstars);
// change button styling of the other button if user is reacting the second time to post
$clicked_btn.siblings('i.fa-star').removeClass('fa-star').addClass('fa-star-o');
}
});
});
$('.heart-btn').on('click', function(){
var post_id = $(this).data('id');
$clicked_btn = $(this);
if ($clicked_btn.hasClass('fa-heart-o')) {
action = 'bike';
} else if($clicked_btn.hasClass('fa-heart')){
action = 'unbike';
}
$.ajax({
url: 'index.php',
type: 'post',
data: {
'action': action,
'post_id': post_id
},
success: function(data){
res = JSON.parse(data);
if (action == "bike") {
$clicked_btn.removeClass('fa-heart-o');
$clicked_btn.addClass('fa-heart');
} else if(action == "unbike") {
$clicked_btn.removeClass('fa-heart');
$clicked_btn.addClass('fa-heart-o');
}
// display the number of likes and dislikes
$clicked_btn.siblings('span.bikes').text(res.bikes);
$clicked_btn.siblings('span.disbikes').text(res.disbikes);
// change button styling of the other button if user is reacting the second time to post
$clicked_btn.siblings('i.fa-heart').removeClass('fa-heart').addClass('fa-heart-o');
}
});
});
// if the user clicks on the dislike button ...
$('.dislike-btn').on('click', function(){
var post_id = $(this).data('id');
$clicked_btn = $(this);
if ($clicked_btn.hasClass('fa-thumbs-o-down')) {
action = 'dislike';
} else if($clicked_btn.hasClass('fa-thumbs-down')){
action = 'undislike';
}
$.ajax({
url: 'index.php',
type: 'post',
data: {
'action': action,
'post_id': post_id
},
success: function(data){
res = JSON.parse(data);
if (action == "dislike") {
$clicked_btn.removeClass('fa-thumbs-o-down');
$clicked_btn.addClass('fa-thumbs-down');
} else if(action == "undislike") {
$clicked_btn.removeClass('fa-thumbs-down');
$clicked_btn.addClass('fa-thumbs-o-down');
}
// display the number of likes and dislikes
$clicked_btn.siblings('span.likes').text(res.likes);
$clicked_btn.siblings('span.dislikes').text(res.dislikes);
// change button styling of the other button if user is reacting the second time to post
$clicked_btn.siblings('i.fa-thumbs-up').removeClass('fa-thumbs-up').addClass('fa-thumbs-o-up');
}
});
});
});
我希望看到在ubuntu中得到的相同输出，因为在localhost中它不会给我一个错误，但是当我将其上载到godaddy的cPanel File Manager时，我得到“此页面无法正常工作”，请帮助：c < / p>