Year: 2009

PHP

FeedParser: A PHP Class for Quick Feed Parsing

Post author By masnun
Post date December 12, 2009
1 Comment on FeedParser: A PHP Class for Quick Feed Parsing

Well, it doesn’t require any further explanation — we the web developers know how often we need to parse feeds. It’s a very common practice to use SimpleXML for parsing feeds. But today Hasin vai (Hasin Hayder) showed me a very cool thing — the Google Feed Parser. It’s a web based feed parser that is internally used by Google. The coolest thing about the parser is that it returns data as JSON 🙂

Seeing the point, I quickly fired off my netbeans IDE and wrote a php class for quick feed parsing 😀 Why fetch the feed and then parse it? Let Google handle the parsing and fetch the parsed results 🙂 Google is really making our lives simpler!

Here’s the class definition:

<?php
// Filename: feedparser.php
class FeedParser {
    function parse($feedUrl="https://masnun.com/feed/rss/",$number=5) {
        $feedUrl = urlencode($feedUrl);
        $gUrl = "http://www.google.com/uds/Gfeeds?num={$number}&hl=en&output=json&q={$feedUrl}&v=1.0";
        $json = json_decode(file_get_contents($gUrl),true);
        return  $json["responseData"]["feed"];
    }
}
?>

<?php

// Filename: feedparser.php

class FeedParser {

function parse($feedUrl="https://masnun.com/feed/rss/",$number=5) {

$feedUrl = urlencode($feedUrl);

$gUrl = "http://www.google.com/uds/Gfeeds?num={$number}&hl=en&output=json&q={$feedUrl}&v=1.0";

$json = json_decode(file_get_contents($gUrl),true);

return $json["responseData"]["feed"];

}

So, how do you use it? Initiate a new FeedParser object and then call the parse() method with the feed URL and entry count. The second parameter is optional and is “5” by default.

<?php
include("feedparser.php");
$parser = new FeedParser();
$data = $parser->parse("https://masnun.com/feed/rss/",3);
echo  $data["entries"][2]['title']."\n";
?>

<?php

include("feedparser.php");

$parser = new FeedParser();

$data = $parser->parse("https://masnun.com/feed/rss/",3);

echo $data["entries"][2]['title']."\n";

So what do we get in the $data array? Good question, lets see :

<?php
include("feedparser.php");
$parser = new FeedParser();
$data = $parser->parse("https://masnun.com/feed/rss/",3);
var_dump( $data );
?>

<?php

include("feedparser.php");

$parser = new FeedParser();

$data = $parser->parse("https://masnun.com/feed/rss/",3);

var_dump( $data );

Javascript

JSDB: A JavaScript Interpreter

Post author By masnun
Post date December 5, 2009
2 Comments on JSDB: A JavaScript Interpreter

Recently I have taken keen interest in JavaScript, mainly because to handle jQuery better. I have always found JS very cool but never had the time to dig deeper into the language. In this EID vacation at KU, I had plenty of leisure times even after my tasks at Leevio and the free lance jobs. I started passing time with JS and found something really cool that I didn’t know so far.

JavaScript is a programming language. Yeah, just like the interpreted languages like Python, PHP and Ruby, JS is another good old programming language. My ignorance, I never knew this! 🙁 I have always thought that JavaScript is merely a client side scripting language that works with web browsers only 😛

My perceptions started changing few months ago when I saw some server side applications of JavaScript coding. Lately, a few days back I saw the node.js projects which is quite similar to the Twisted project implemented in Python. I started wondering how JS is being interpreted on the server side. Google answered me 😀 There are JavaScript interpreters for even shell scripting 🙂

I first tried the interpreters from Mozilla but unfortunately couldn’t make them work on my machine. So, I switched to JSDB 😀 The interpreter is available free for download at: http://www.jsdb.org/ 🙂

They say on their homepage:

JSDB is JavaScript for databases, a scripting language for data-driven, network-centric programming on Windows, Mac, Linux, and SunOS. JSDB works with databases, XML, the web, and email. It is free and open-source. Use it as a JavaScript shell, to run CGI programs, or as a web server.

Yeah, I indeed use it as a JavaScript Shell 😀

Here is the Documentation of what JSDB has inside. I have made a PDF print out of the page for offline reading!

I really find the tool interesting because I am writing small throw away programs those are not really that much useful but the development curve is contributing to my JS skills 😀

Javascript PHP

jQuery with PHP

I am learning jQuery these days and here’s the source code of a php script that uses jQuery on the client side.

I have mainly demonstrated jQuery here. PHP has been used to manipulate desired number of paragraphs quickly 😀

You get a number of paragraphs. Hovering over them changes their style. Clicking the “Hide” link hides the paragraphs one by one. 🙂

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
    <head>
        <title>jQuery with PHP</title>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
        <script type="text/JavaScript"
        src="jquery-1.3.2.min.js"></script>
        <script type="text/JavaScript">
            $(document).ready(function() { masnun(); });

            function masnun() {

                i = 0;
                total = $("p").length - 1;
                $("a").click(function (e) {
                    if(i > total) {
                        alert("No more paragraphs to hide!");
                        e.preventDefault();
                    } else {
                        e.preventDefault();
                        $("p:eq("+i+")").hide("slow");
                        i = i + 1;
                    }
                });
                $("p").hover(function () {
                    $(this).addClass("hover");
                }, function () {
                    $(this).removeClass("hover");
                });


            }
        </script>
        <style>
            p { color:black; margin:5px; cursor:pointer; }
            p.hover { background:black; color: white; }
        </style>
    </head>
    <body>

        <a href="">Hide</a> <br/><br/>


        <?php
        for($i=0; $i < 7; $i++) {
            echo "<p> Paragraph number: {$i} </p>";
        }
        ?>




    </body>
</html>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"

"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html>

<head>

<title>jQuery with PHP</title>

src="jquery-1.3.2.min.js"></script>

$(document).ready(function() { masnun(); });

function masnun() {

i = 0;

total = $("p").length - 1;

$("a").click(function (e) {

if(i > total) {

alert("No more paragraphs to hide!");

e.preventDefault();

} else {

e.preventDefault();

$("p:eq("+i+")").hide("slow");

i = i + 1;

}

});

$("p").hover(function () {

$(this).addClass("hover");

}, function () {

$(this).removeClass("hover");

});

}

</script>

<style>

p { color:black; margin:5px; cursor:pointer; }

p.hover { background:black; color: white; }

</style>

</head>

<body>

<?php

for($i=0; $i < 7; $i++) {

echo "<p> Paragraph number: {$i} </p>";

}

</body>

</html>

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