在页面php上显示最喜欢的帖子
我写了一个脚本，用户无需注册或登录即可收到喜欢的帖子。在页面上显示摘要的帖子，最喜欢的帖子是第一位的，这很棒，但是我创建了一个“最喜欢的”部分，我想在其中显示最喜欢的帖子。
comment-like-unlike.php
?php
require_once ("db.php");
$memberId = 1;
$commentId = $_POST['comment_id'];
$likeOrUnlike = 0;
if($_POST['like_unlike'] == 1)
{
$likeOrUnlike = $_POST['like_unlike'];
}
$sql = "SELECT * FROM tbl_like_unlike WHERE comment_id=" . $commentId . " and member_id=" . $memberId;
$result = mysqli_query($conn, $sql);
$row = mysqli_fetch_array($result, MYSQLI_ASSOC);
if (! empty($row))
{
$query = "UPDATE tbl_like_unlike SET like_unlike = " . $likeOrUnlike . " WHERE comment_id=" . $commentId . " and member_id=" . $memberId;
} else
{
$query = "INSERT INTO tbl_like_unlike(member_id,comment_id,like_unlike) VALUES ('" . $memberId . "','" . $commentId . "','" . $likeOrUnlike . "')";
}
mysqli_query($conn, $query);
$totalLikes = "No ";
$likeQuery = "SELECT sum(like_unlike) AS likesCount FROM tbl_like_unlike WHERE comment_id=".$commentId;
$resultLikeQuery = mysqli_query($conn,$likeQuery);
$fetchLikes = mysqli_fetch_array($resultLikeQuery,MYSQLI_ASSOC);
if(isset($fetchLikes['likesCount'])) {
$totalLikes = $fetchLikes['likesCount'];
}
echo $totalLikes;
?>
comment-add.php
<?php
require_once ("db.php");
$commentId = isset($_POST['comment_id']) ? $_POST['comment_id'] : "";
$comment = isset($_POST['comment']) ? $_POST['comment'] : "";
$commentSenderName = isset($_POST['name']) ? $_POST['name'] : "";
$date = date('Y-m-d H:i:s');
$sql = "INSERT INTO tbl_comment(parent_comment_id,comment,comment_sender_name,date) VALUES ('" . $commentId . "','" . $comment . "','" . $commentSenderName . "','" . $date . "')";
$result = mysqli_query($conn, $sql);
if (! $result) {
$result = mysqli_error($conn);
}
echo $result;
?>
get-like-unlike.php
<?php
require_once ("db.php");
$commentId = $_POST['comment_id'];
$totalLikes = "No ";
$likeQuery = "SELECT sum(like_unlike) AS likesCount FROM tbl_like_unlike WHERE comment_id=".$commentId;
$resultLikeQuery = mysqli_query($conn,$likeQuery);
$fetchLikes = mysqli_fetch_array($resultLikeQuery,MYSQLI_ASSOC);
if(isset($fetchLikes['likesCount'])) {
$totalLikes = $fetchLikes['likesCount'];
}
echo $totalLikes;
?>
comment-list.php
<?php
require_once ("db.php");
$memberId = 1;
$sql = "SELECT tbl_comment.*,tbl_like_unlike.like_unlike FROM tbl_comment LEFT JOIN tbl_like_unlike ON tbl_comment.comment_id = tbl_like_unlike.comment_id AND member_id = " . $memberId . " ORDER BY tbl_like_unlike.like_unlike DESC, tbl_like_unlike.date DESC";
$result = mysqli_query($conn, $sql);
$record_set = array();
while ($row = mysqli_fetch_assoc($result)) {
array_push($record_set, $row);
}
mysqli_free_result($result);
mysqli_close($conn);
echo json_encode($record_set);
?>
index.php：
<div class="comment-form-container">
<form id="frm-comment">
<div class="input-row">
<input type="hidden" name="comment_id" id="commentId"
placeholder="Name" /> <input class="input-field"
type="text" name="name" id="name" placeholder="Name" />
</div>
<div class="input-row">
<textarea class="input-field" type="text" name="comment"
id="comment" placeholder="Add a Comment"> </textarea>
</div>
<div>
<font color="white"><input type="button" class="btn-submit" id="submitButton"
value="Publish" /></font>
</div>
</form>
</div>
<div id="output"></div>
<script>
var totalLikes = 0;
var totalUnlikes = 0;
function postReply(commentId) {
$('#commentId').val(commentId);
$("#name").focus();
}
$("#submitButton").click(function () {
$("#comment-message").css('display', 'none');
var str = $("#frm-comment").serialize();
$.ajax({
url: "comment-add.php",
data: str,
type: 'post',
success: function (response)
{
var result = eval('(' + response + ')');
if (response)
{
$("#comment-message").css('display', 'inline-block');
$("#name").val("");
$("#comment").val("");
$("#commentId").val("");
listComment();
} else
{
alert("Failed to add comments !");
return false;
}
}
});
});
$(document).ready(function () {
listComment();
});
function listComment() {
$.post("comment-list.php",
function (data) {
var data = JSON.parse(data);
var comments = "";
var replies = "";
var item = "";
var parent = -1;
var results = new Array();
var list = $("<ul class='outer-comment'>");
var item = $("<li>").html(comments);
for (var i = 0; (i < data.length); i++)
{
var commentId = data[i]['comment_id'];
parent = data[i]['parent_comment_id'];
var obj = getLikesUnlikes(commentId);
if (parent == "0")
{
if(data[i]['like_unlike'] >= 1)
{
like_icon = "<img src='like.png' id='unlike_" + data[i]['comment_id'] + "' class='like-unlike' onClick='likeOrDislike(" + data[i]['comment_id'] + ",-1)' />";
like_icon += "<img style='display:none;' src='unlike.png' id='like_" + data[i]['comment_id'] + "' class='like-unlike' onClick='likeOrDislike(" + data[i]['comment_id'] + ",1)' />";
}
else
{
like_icon = "<img style='display:none;' src='like.png' id='unlike_" + data[i]['comment_id'] + "' class='like-unlike' onClick='likeOrDislike(" + data[i]['comment_id'] + ",-1)' />";
like_icon += "<img src='unlike.png' id='like_" + data[i]['comment_id'] + "' class='like-unlike' onClick='likeOrDislike(" + data[i]['comment_id'] + ",1)' />";
}
comments = "\
<div class='comment-row'>\
<div class='comment-info'>\
<span class='commet-row-label'>from</span>\
<span class='posted-by'>" + data[i]['comment_sender_name'] + "</span>\
<span class='commet-row-label'>at</span> \
<span class='posted-at'>" + data[i]['date'] + "</span>\
</div>\
<div class='comment-text'>" + data[i]['comment'] + "</div>\
<div>\
<a class='btn-reply' onClick='postReply(" + commentId + ")'>Reply</a>\
</div>\
<div class='post-action'>\ " + like_icon + " \
<span id='likes_" + commentId + "'> " + totalLikes + " likes </span>\
</div>\
</div>";
var item = $("<li>").html(comments);
list.append(item);
var reply_list = $('<ul>');
item.append(reply_list);
listReplies(commentId, data, reply_list);
}
}
$("#output").html(list);
});
}
function listReplies(commentId, data, list) {
for (var i = 0; (i < data.length); i++)
{
var obj = getLikesUnlikes(data[i].comment_id);
if (commentId == data[i].parent_comment_id)
{
if(data[i]['like_unlike'] >= 1)
{
like_icon = "<img src='like.png' id='unlike_" + data[i]['comment_id'] + "' class='like-unlike' onClick='likeOrDislike(" + data[i]['comment_id'] + ",-1)' />";
like_icon += "<img style='display:none;' src='unlike.png' id='like_" + data[i]['comment_id'] + "' class='like-unlike' onClick='likeOrDislike(" + data[i]['comment_id'] + ",1)' />";
}
else
{
like_icon = "<img style='display:none;' src='like.png' id='unlike_" + data[i]['comment_id'] + "' class='like-unlike' onClick='likeOrDislike(" + data[i]['comment_id'] + ",-1)' />";
like_icon += "<img src='unlike.png' id='like_" + data[i]['comment_id'] + "' class='like-unlike' onClick='likeOrDislike(" + data[i]['comment_id'] + ",1)' />";
}
var comments = "\
<div class='comment-row'>\
<div class='comment-info'>\
<span class='commet-row-label'>from</span>\
<span class='posted-by'>" + data[i]['comment_sender_name'] + "</span>\
<span class='commet-row-label'>at</span> \
<span class='posted-at'>" + data[i]['date'] + "</span>\
</div>\
<div class='comment-text'>" + data[i]['comment'] + "</div>\
<div>\
<a class='btn-reply' onClick='postReply(" + data[i]['comment_id'] + ")'>Reply</a>\
</div>\
<div class='post-action'> " + like_icon + " \
<span id='likes_" + data[i]['comment_id'] + "'> " + totalLikes + " likes </span>\
</div>\
</div>";
var item = $("<li>").html(comments);
var reply_list = $('<ul>');
list.append(item);
item.append(reply_list);
listReplies(data[i].comment_id, data, reply_list);
}
}
}
function getLikesUnlikes(commentId)
{
$.ajax({
type: 'POST',
async: false,
url: 'get-like-unlike.php',
data: {comment_id: commentId},
success: function (data)
{
totalLikes = data;
}
});
}
function likeOrDislike(comment_id,like_unlike)
{
$.ajax({
url: 'comment-like-unlike.php',
async: false,
type: 'post',
data: {comment_id:comment_id,like_unlike:like_unlike},
dataType: 'json',
success: function (data) {
$("#likes_"+comment_id).text(data + " likes");
if (like_unlike == 1) {
$("#like_" + comment_id).css("display", "none");
$("#unlike_" + comment_id).show();
}
if (like_unlike == -1) {
$("#unlike_" + comment_id).css("display", "none");
$("#like_" + comment_id).show();
}
},
error: function (data) {
alert("error : " + JSON.stringify(data));
}
});
}
</script>
我会发布一个网站的图片，以便你们知道我在说什么：
这是我最喜欢的帖子：
1 个答案:
答案 0 :(得分：1)
your_table ORDER BY中的SELECT帖子喜欢DESC
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