i have a wml page like this

<?xml version="1.0"?>
<!DOCTYPE wml PUBLIC "-//PHONE.COM//DTD WML 1.3//EN"
            "http://www.openwave.com/dtd/wml13.dtd" >

<wml>
<head>
<meta http-equiv="Cache-Control" content="max-age=0" forua="true"/>
</head>
<card title="Specials">
<p>
text
<input name="var1" emptyok="false" /><br/>
</p>
<do type="accept" label="Continua">
<go method="post" href="http://www.ciao.it/wap/a.php">
    <postfield name="destname" value="$var1"/>
</go>
</do>
</card>
</wml>

***************
in http://www.ciao.it/wap/a.php

if I write   

echo $destname;

I get value that i have inserted in wml page...

instead if i write

$fd=fopen("file.txt","w");
fputc($fd,$destname);

in file.txt i get the string $var1

and if in php page i write
mysql_query("insert into table (field) values '" . $destname . "');"

in db i get the string $var1 instead of value that echo $var1 print!!!