400 is actually an HTTP status code: it means that the request your browser sent was not formed correctly. This could be caused by anything from an unstable internet connection, to browser/cache glitches, to malware or viruses. It could be a problem with the blogger server, but this is unlikely.
As far as the PHP goes, if you don't have PHP installed locally, you could upload that script to a webserver that runs PHP. In the meantime, here's the output using the text you posted:
Code:
<article><a href="http://www.bloghuts.com/2011/09/castle-wars-2.html"><img alt="Castle Wars 2" height="90" src="https://lh6.googleusercontent.com/-BNMxQx0yLd0/TmwbdwhSOGI/AAAAAAAABO4/vse6JA_R8es/s288/1.jpg" width="90" /></a></article>
</div>
<div class="happypara">
Awesome turn based strategic card game with unlockable cards and multi-player mode. Castle Wars 2 is the sequel to Castle wars, and is a very addictive card game where your goal is to crush your enemy's castle or be the first to build a 100 storey castle. Crush or be crushed!
<!--more-->Use your mouse to choose which step to take against ur openent.There are different kind of action cards which u can click and take that action.Have fun while playing the game.
</div>
</div>
<div class="gamebuttondiv">
<a class="poplight bloghutsgamebutton buttonbloghuts buttongradient" href="#?w=100%" rel="popup_name">Play</a></div>
<div class="popup_block" id="popup_name">
<div class="gamesharebuttons addthis_toolbox addthis_default_style ">
<a class="addthis_button_facebook_like" fb:like:layout="button_count"></a><a class="addthis_button_tweet"></a><a class="addthis_button_google_plusone" g:plusone:size="medium"></a></div>
<script type="text/javascript">
$(document).ready(function(){
$('a.poplight[href^=#]').click(function() {
$('<iframe/>')
.attr('frameborder', 0)
.attr('allowTransparency', false)
.attr('scrolling', 'no')
.attr('width', '100%')
.attr('height', '98%')
.attr('src', 'http://files.cryoffalcon.com/bhgames/strategy/War/Castle%20Wars%202.html')
.appendTo('#popup_name');
});
});
$('#popup_name .close').live('click', function%d TW"Cf%X $opup_name iframe').remove();
});
</script></div>
<div class="sharecountercontainer">
<div class="sharebuttoncounter">
<span class="gamecategoriespara2 sharecountertext">Share</span><span class="gamecategoriespara1 sharecountertext">And</span><span class="gamecategoriespara2 sharecountertext">Be</span><span class="gamecategoriespara1 sharecountertext">A</span><span class="gamecategoriespara2 sharecountertext">Rainbow</span><span class="gamecategoriespara1 sharecountertext">In</span><span class="gamecategoriespara2 sharecountertext">Someone</span><span class="gamecategoriespara1 sharecountertext">Else's</span><span class="gamecategoriespara2 sharecountertext">Cloud</span><span class="gamecategoriespara1 sharecountertext">:</span></div>
<div class="addthis_toolbox addthis_default_style ">
<a title='Click If You Like It' class="addthis_button_facebook_like sharebuttoncounter" fb:like:layout="box_count"></a><a title='Tweet It' class="addthis_button_tweet sharebuttoncounter" tw:count="vertical"></a><a title='Add +1 If You Like It' class="addthis_button_google_plusone sharebuttoncounter" g:plusone:size="tall"></a><a class="addthis_counter sharebuttoncounter"></a><form class="emailsubcounter" style="display:inline;" action="http://feedburner.google.com/fb/a/mailverify" method="post" target="popupwindow" onsubmit="window.open('http://feedburner.google.com/fb/a/mailverify?uri=bloghuts/vlwg', 'popupwindow', 'scrollbars=yes,width=550,height=520');return true">
<input onfocus="if(this.value==this.defaultValue)this.value='';" value="Enter Your Email Address..." type="text" class="formbox" onblur="if(this.value=='')this.value=this.defaultValue;" style="width:200px; height:27px;" name="email"/><input type="hidden" value="bloghuts/vlwG" name="uri"/><input type="hidden" name="loc" value="en_US"/> <input class="formbutton buttonbloghuts buttongradient" value="Subscribe" type="submit" /></form>
<div class="addthis_toolbox addthis_32x32_style addthis_default_style">
<div class="followuscont">
<span class="gamecategoriespara2 sharecountertext">Follow</span><span class="gamecategoriespara1 sharecountertext">Us</span><span class="gamecategoriespara2 sharecountertext">:</span></div>
<a title='Be a Fan at Facebook' class="addthis_button_facebook_follow followusbuttons" addthis:userid="bloghuts"></a><a title='Follow Us on Twitter' class="addthis_button_twitter_follow followusbuttons" addthis:userid="bloghuts"></a><a title='Add Us to Your Circles' class="addthis_button_google_follow followusbuttons" addthis:userid="u/1/107487329284612856325"></a>
</div>
</div>
</div>
<div id="posttitle" style="display: none;">
<span class="gamecategoriespara2 relatedposttitle">More</span><span class="gamecategoriespara1 relatedposttitle">War</span><span class="gamecategoriespara2 relatedposttitle">Games</span><span class="gamecategoriespara1 relatedposttitle">:</span></div>
<script type='text/javascript'>
var defaultnoimage="https://lh6.googleusercontent.com/-_oie7lNHtzU/T6uAvFlmvmI/AAAAAAAAACM/GKoUEzn8YPs/s0/noimage.png";
var maxresults=14;
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var relatedpoststitle = document.getElementById("posttitle").innerHTML;
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<meta name="description" content="Awesome turn based strategic card game with unlockable cards and multi-player mode. Castle Wars 2 is the sequel to Castle wars, and is a very addictive card game where your goal is to crush your enemy's castle or be the first to build a 100 storey castle. Crush or be crushed!" />
BTW, this fragment has several stray tags (</div>s that aren't opened, etc.). also, you shouldn't have <meta> tags in your page's <body>. They belong in the <head>.
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