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index.php
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index.php
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<?php
require('db.php');
/**
* Adding News for Demo request by applying check on addnews POST parameter
**/
if(isset($_POST['addnews'])){
$news = filter_input(INPUT_POST, 'news', FILTER_SANITIZE_SPECIAL_CHARS);
$name = filter_input(INPUT_POST, 'name', FILTER_SANITIZE_SPECIAL_CHARS);
$sql = "INSERT INTO news (description, name, date) VALUES ('".$news."', '".$name."', '".date('Y-m-d H:i:s')."')";
mysql_query($sql);
}
/**
* Preparing and getting response for latest feed items.
**/
if(isset($_POST['latest_news_time'])){
$sql = "SELECT * FROM news ";
$sql .= "WHERE date > '".$_POST['latest_news_time']."' ";
$sql .= "ORDER BY date DESC";
$resource = mysql_query($sql);
$current_time = $_POST['latest_news_time'];
$item = mysql_fetch_assoc($resource);
$last_news_time = $item['date'];
while ($last_news_time < $current_time) {
usleep(1000); //giving some rest to CPU
$resource = mysql_query($sql);
$item = mysql_fetch_assoc($resource);
$last_news_time = $item['date'];
if(!$item['date']){
$last_news_time = -1;
}
}
?>
<li class="response" id="<?php echo $item['date'] ?>">
<span class="feedtext"><?php echo $item['description'] ?> was added by <b><?php echo $item['name'] ?></b></span>
</li>
<?php
exit;
}
/**
* Getting news Items and preparing sql query with respect to request
**/
$sql = "SELECT * FROM news ORDER BY date DESC LIMIT 0, 10";
if(isset($_POST['last_time'])){
$sql = "SELECT * FROM news WHERE date < '".$_POST['last_time']."' ORDER BY date DESC LIMIT 0, 10";
}
$resource = mysql_query($sql);
$news = array();
while($row = mysql_fetch_assoc($resource)){
$news[] = $row;
}
?>
<html>
<head>
<title>:: News Feed ::</title>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js" type="text/javascript"></script>
<script src="//ajax.googleapis.com/ajax/libs/jqueryui/1.9.2/jquery-ui.min.js" type="text/javascript"></script>
<script src="js/scroll-pagination.js" type="text/javascript"></script>
<script src="js/slimScroll.js" type="text/javascript"></script>
<link href="styles.css" rel="stylesheet" type="text/css" />
</head>
<script type="text/javascript">
$(function(){
/**
* Integrating slim scroll
**/
$("#feeds ul").slimScroll({
height: '520px'
});
/**
* Integrating Scroll Pagination
**/
var feeds = $("#feeds ul");
var last_time = feeds.children().last().attr('id');
feeds.scrollFeedPagination({
'contentPage': 'index.php',
'contentData': {
'last_time' : last_time
},
'scrollTarget': feeds,
'beforeLoad': function(){
feeds.parents('#feeds').find('.loading').fadeIn();
},
'afterLoad': function(elementsLoaded){
last_time = feeds.children().last().attr('id');
feeds.scrollFeedPagination.defaults.contentData.last_time = last_time;
feeds.parents('#feeds').find('.loading').fadeOut();
var i = 1;
$(elementsLoaded).fadeInWithDelay();
}
});
$.fn.fadeInWithDelay = function(){
var delay = 0;
return this.each(function(){
$(this).delay(delay).animate({
opacity:1
}, 200);
delay += 100;
});
};
//calling the function to update news feed
setTimeout('updateFeed()', 1000);
});
/**
* Function to update the news feed
**/
function updateFeed(){
id = $('#feeds li :first').attr('id');
if(!id){
id = 0;
}
$.ajax({
'url' : 'index.php',
'type' : 'POST',
'data' : {
'latest_news_time' : id
},
success : function(data){
setTimeout('updateFeed()', 1000);
$(data).prependTo("#feeds ul");
}
})
}
</script>
<p><a href="http://feeds.feedburner.com/Techknowlogists"><img src="http://feeds.feedburner.com/~fc/Techknowlogists?bg=99CCFF&fg=444444&anim=0" height="26" width="88" style="border:0" alt="" /></a></p>
<body>
<div class="main_container">
<div class="feeds_container">
<h3 class="feed_head">News Feed</h3>
<div id="feeds" class="feeds">
<ul>
<?php foreach($news as $item): ?>
<li id="<?php echo $item['date'] ?>">
<span class="feedtext"><?php echo $item['description'] ?> was added by <b><?php echo $item['name'] ?></b></span>
</li>
<?php endforeach; ?>
</ul>
<div class="loading">
<img src="images/loading_transparent.gif" alt=""/>
</div>
</div>
</div>
<div class="form">
<form action="" id="add-news-form" method="post">
Name : <input name="name" id="name" type="text" /><br>
News : <input name="news" id="news" type="text" /><br>
<input type="button" onclick="addNews()" value="Add News" />
</div><br><br style="clear: both">
</div>
</body>
</html>
<script>
/**
* Function to add news
**/
function addNews(){
var validation = "";
var values = {};
$.each($('#add-news-form').serializeArray(), function(i, field) {
if((field.value == 0)){
validation = "false";
}
values[field.name] = field.value;
});
if(validation == "false"){
alert("Name and News are required Values");
return false;
}
values['addnews'] = '';
$.ajax({
'url' : '',
'type' : 'POST',
'data' : values,
success : function(data){
}
})
}
</script>