sofasurfer/comments.php

## comments.php
<?php
/*
 *      comments.php
 *
 *      Copyright 2012 kib <kib@sofasurfer.org>
 *
 *
 *
 */


 	/* path to comments data file */
 	$commentsFile = 'data/comments.txt';

 	/* variable for error message */
 	$errorMessage = false;

 	/**
 	 * Function to sort comments list by date */
 	function cmp($a, $b){
		return strcmp($b['date'], $a['date']);
	}

	/* check if comments file exist */
	if( file_exists($commentsFile) ){

		/* get comments from file */
		$commentsText = file_get_contents($commentsFile);

		/* create array list from comments */
		$commentsList = json_decode($commentsText,true);
	}

	/* check if new comment is posted */
	if( !empty($_POST['comment']) ){

	 	/* get IP address */
	 	$happyPersonIp = $_SERVER['REMOTE_ADDR'];

	 	/* get posted comment */
	 	$sComment = strip_tags($_POST['comment']);

	 	/* check if posted message is valid */
	 	if( !empty($sComment) ){

			/* show error */
			$errorMessage = "You should add some comment!";

	 	}else{

			/* add comment to array */
			$commentsList['comments'][] = array(
				'text' => $sComment,
				'ip' => $happyPersonIp,
				'date' => time()
			);

			/* convert comments to string */
			$commentsText = json_encode($commentsList);

			/* save comment to file */
			file_put_contents($commentsFile, $commentsText);
		}
	 }

	/* check if comments exist */
	if( !empty($commentsList) ){

		/* reverse array so latest comment is first */
		$commentsList = array_reverse($commentsList,true);

		/* sort list by date */
		usort($commentsList['comments'], "cmp");

		/* create html list */
		$commentsHTML = "<ul>";

		/* loop all comments */
		foreach( $commentsList['comments'] as $commentItem ){

			// add comment to html list
			$commentsHTML.= "<li>" . $commentItem['text'] . "</li>";
		}

		/* close html comments list */
		$commentsHTML .= "</ul>";
	}

?>

<html>
	<head>
		<title>Simple comments | Happy Code | sofasurfer.ch</title>
		<link rel="shortcut icon" type="image/x-icon" href="/favicon.ico">
		<STYLE type="text/css">
			/* some happy style */
			body{font-family:cursive;}
			ul {list-style:none;}
			li {padding:20px;}
			.error{color:red;}
		</STYLE>
		<script type="text/javascript">

			var _gaq = _gaq || [];
			_gaq.push(['_setAccount', 'UA-3456716-9']);
			_gaq.push(['_trackPageview']);

			(function() {
				var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
				ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
				var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
			})();

		</script>
	</head>
	<body>
		<center>
			<img src="img/head.jpg" alt="Be Happy Happy" />
			<form id="comments" method="POST">
				<h1>What Do You Want?</h2>
				<div class="error"><?=$errorMessage?></div>
				<textarea id="comment" name="comment" cols="70" style="font-family:cursive;font-size: 18px;font-weight:bold;"> </textarea><br/>
				<input type="submit" value="this" onclick="_gaq.push(['_trackPageview', '/tracking/comment-submit']);" />
				<input type="submit" value="nothing" onclick="document.getElementById('comment').value='no';" />
				<?=$commentsHTML?>
			</form>
			<p>written by <a href="http://blog.sofasurfer.ch/2011/03/04/php-simple-comments-readwrite-json-data-to-text-file/">blog.sofasurfer.ch</a> download source code <a href="http://storage.sofasurfer.org/download/comments.tar.gz" target="_blank">comments.tar.gz</a></p>
		</center>
	</body>
</html>
	<?php
	/*
	* comments.php
	*
	* Copyright 2012 kib <kib@sofasurfer.org>
	*
	*
	*
	*/


	/* path to comments data file */
	$commentsFile = 'data/comments.txt';

	/* variable for error message */
	$errorMessage = false;

	/**
	* Function to sort comments list by date */
	function cmp($a, $b){
	return strcmp($b['date'], $a['date']);
	}

	/* check if comments file exist */
	if( file_exists($commentsFile) ){

	/* get comments from file */
	$commentsText = file_get_contents($commentsFile);

	/* create array list from comments */
	$commentsList = json_decode($commentsText,true);
	}

	/* check if new comment is posted */
	if( !empty($_POST['comment']) ){

	/* get IP address */
	$happyPersonIp = $_SERVER['REMOTE_ADDR'];

	/* get posted comment */
	$sComment = strip_tags($_POST['comment']);

	/* check if posted message is valid */
	if( !empty($sComment) ){

	/* show error */
	$errorMessage = "You should add some comment!";

	}else{

	/* add comment to array */
	$commentsList['comments'][] = array(
	'text' => $sComment,
	'ip' => $happyPersonIp,
	'date' => time()
	);

	/* convert comments to string */
	$commentsText = json_encode($commentsList);

	/* save comment to file */
	file_put_contents($commentsFile, $commentsText);
	}
	}

	/* check if comments exist */
	if( !empty($commentsList) ){

	/* reverse array so latest comment is first */
	$commentsList = array_reverse($commentsList,true);

	/* sort list by date */
	usort($commentsList['comments'], "cmp");

	/* create html list */
	$commentsHTML = "<ul>";

	/* loop all comments */
	foreach( $commentsList['comments'] as $commentItem ){

	// add comment to html list
	$commentsHTML.= "<li>" . $commentItem['text'] . "</li>";
	}

	/* close html comments list */
	$commentsHTML .= "</ul>";
	}

	?>

	<html>
	<head>
	<title>Simple comments \| Happy Code \| sofasurfer.ch</title>
	<link rel="shortcut icon" type="image/x-icon" href="/favicon.ico">
	<STYLE type="text/css">
	/* some happy style */
	body{font-family:cursive;}
	ul {list-style:none;}
	li {padding:20px;}
	.error{color:red;}
	</STYLE>
	<script type="text/javascript">

	var _gaq = _gaq \|\| [];
	_gaq.push(['_setAccount', 'UA-3456716-9']);
	_gaq.push(['_trackPageview']);

	(function() {
	var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
	ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
	var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
	})();

	</script>
	</head>
	<body>
	<center>
	<img src="img/head.jpg" alt="Be Happy Happy" />
	<form id="comments" method="POST">
	<h1>What Do You Want?</h2>
	<div class="error"><?=$errorMessage?></div>
	<textarea id="comment" name="comment" cols="70" style="font-family:cursive;font-size: 18px;font-weight:bold;"> </textarea><br/>
	<input type="submit" value="this" onclick="_gaq.push(['_trackPageview', '/tracking/comment-submit']);" />
	<input type="submit" value="nothing" onclick="document.getElementById('comment').value='no';" />
	<?=$commentsHTML?>
	</form>
	<p>written by <a href="http://blog.sofasurfer.ch/2011/03/04/php-simple-comments-readwrite-json-data-to-text-file/">blog.sofasurfer.ch</a> download source code <a href="http://storage.sofasurfer.org/download/comments.tar.gz" target="_blank">comments.tar.gz</a></p>
	</center>
	</body>
	</html>