Share code in blooger with style

this is an update from previous post (I type using Indonesia Languages). The script I made to make my code able to share to anyone and anywhere! The script I share not always php code, but basic code etc.

Some code can't separated like I use to type in php. Example like <? $s="this is my code blabla"; ?> let's say bla-bla think are make 2 line.. For sake of easy to view. I separated using enter but in basic, separated using enter can't make problem.

Actualy there is a solution to avoid it. Today script are to make reader easy to understand the code..If you read the 2nd line (actualy that the 4th).. You will notice how long I type the textarea. in fact I was to make you understand that <textarea> .... is one line.. I able to separated the text area soo you able to understand the code.  And for the beauty of code, I type the textarea like below

<form method="post">
<textarea name="myCode" style="width:440px; height:200px" rows="15" cols="80"></textarea>
<br><input type=submit value='save' />
</form>
<?php
if($_POST)
{
	$s=$_POST[myCode];
	$a=explode("\n",$s);
	$txt.="\n<table cellspacing='0' cellpadding='0' ><tbody>";
	foreach($a as $val)
	{
		$a1=explode("\t",rtrim($val));
		$a2[]=array(count($a1),trim(htmlentities($val)));
		$max<count($a1)?$max=count($a1):$dim=1;
	}
	$txt.="<tr>";
	for($i=0;$i<$max;$i++)$txt.="<td width=30px> &nbsp;</td>";
	//$txt.="<td>&nbsp;</td>";
	$txt.="</tr>";
	$txt.="<tr bgcolor='blue'>";
	$txt.="<td height=1px width=500px colspan='$max'>&nbsp;</td>";
	$txt.="</tr>";
	//==================
	$i2=0;
	for($i=0;$i<count($a2);$i++)
	{
		$i2++;
		switch($i2%3)
		{
		case 0: $bg="lightblue"; break;
		case 1: $bg="lightgreen"; break;
		default: $bg="#BEFEFA";
		}
		$txt.="\n<tr bgcolor='$bg'>";
		//my plan is to put number in here..
		$n=$a2[$i][0]-1;
		if($n>0)
		{
			for($i3=0;$i3<$n;$i3++){
				$txt.="<td>\t&nbsp;</td>";
				if($i3>100) die($txt);
			}
		}
		$n=$max-$a2[$i][0]+1;
		$txt.="\n\t<td colspan=$n align=left>";
		$txt.='<span style="font-family: \'courier new\', courier;">';
		$txt.=$a2[$i][1]."</span>&nbsp;</td>";
		$txt.="</tr>";
	}
	//===================
	$txt.="\n</tbody></table>";
?><textarea name="text" style="width:440px; height:200px" rows="15"
		cols="80"><?=htmlentities($txt);?></textarea>
<?
echo $txt;
}