PHP4 - Show Multiline Output From Multiline Textbox (Send Email)

YOUR ERROR:
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    your error was use of chr(13) and chr(10) use \r \n for carriage return and linefeed in php

SOLUTION
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    I am giving a piece from one of my projects it has been under test for long and in pretty many projects its bound to work
    I made it a function as i use it many times over. So its in an include file and is

function FormatForWeb($stringMain)
{
    $stringMain=eregi_replace("\n","<br>",$stringMain);
    return $stringMain ;
}

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EXAMPLE USE
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to use I am using the same varibles a sgive in your question ie $_POST["txtDescription"] from this line i assume that you have a text box named 'xtDescription' instead of $_POST["txtDescription"] I am using variable '$txtDescription'. This is same as php automativcally creats any variable from the POST data

           $toPrint=FormatForWeb( $txtDescription);
            print $toPrint;

           -----------------
           'more unreadable alternative is many people believe such cryptic coding is power coding
           'but analysying this code u shall see its just saves space and no performance differance

           print(FormatForWeb($txtDescription)
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additional function
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just for sake of completion iam giving below the other function that takes a html and makes it a regular crlf saparated strinfg useful if you need to paste in some text box or something
function FormatForWeb($stringMain)
{
    $stringMain=eregi_replace("<br>","\n",$stringMain);
    return $stringMain ;
}
---Regards and have fun