Curl

<form name="forma" method="post">
<td><input type="text" name="trk1" size="150" align="center" placeholder="Пример: YF123456789RU" /></td>
</form>
<?php
$trk1 = $_POST['trk1'];
$ch = curl_init();
curl_setopt($ch, CURLOPT_POST,1);
curl_setopt($ch, CURLOPT_POSTFIELDS,'BarCode=$trk1&searchsign=1');
curl_setopt($ch, CURLOPT_URL,'http://www.russianpost.ru/resp_engine.aspx?Path=rp/servise/ru/home/postuslug/trackingpo');
curl_setopt($ch, CURLOPT_USERAGENT, 'Opera 10.00');
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
$res = curl_exec($ch);
curl_close($ch);
$site = $res;
preg_match('|<table class="pagetext">(.*)</table>|Uis',$site,$ok);
echo "$ok";
?>

<form action="/resp_engine.aspx?Path=rp/servise/ru/home/postuslug/trackingpo" method="POST" name="F1">
<input type="hidden" value="" name="OP">
<input type="hidden" value="rp/servise/ru/home/postuslug/trackingpo" name="PATHCUR">
<input type="hidden" value="" name="PATHFROM">
<input type="hidden" value="" name="WHEREONOK">
<input type="hidden" value="" name="ASP">
<input type="hidden" value="" name="PARENTID">
<input type="hidden" value="" name="FORUMID">
<input type="hidden" value="" name="NEWSID">
<input type="hidden" value="" name="DFROM">
<input type="hidden" value="" name="DTO">
<input type="hidden" value="" name="CA">
<input type="hidden" value="03" name="CDAY">
<input type="hidden" value="03" name="CMONTH">
<input type="hidden" value="2012" name="CYEAR">
<input type="hidden" value="" name="NAVCURPAGE">
<input type="hidden" value="" name="SEARCHTEXT">
<input type="text" class="searchh" onkeydown="return sendSearch2OnEnter(event)" name="searchAdd" id="searchAdd">
<input type="hidden" value="RP/INDEX/RU/Home" name="PATHWEB" class="SERACHEDIT">
<input type="hidden" value="RP/INDEX/RU/Home/Search" name="PATHPAGE" class="SERACHEDIT">
<input type="hidden" name="search1" class="SERACHEDIT">
        
<input type="hidden" name="searchsign" id="searchsign"></p>
<input type="hidden" value="" maxlength="14" size="14" name="entryBarCode" id="entryBarCode"><p>
<input type="button" value="Найти" onclick="CheckInputCode();" name="searchbarcode">
</form>

<html>
        <head>
                <title>Трекер</title>
                <meta http-equiv="content-type" content="text/html;charset=utf-8">
                <link href="./styles.css" type="text/css" rel="stylesheet">
        </head>
        <body>
<form name="forma" method="post">
<td><input type="text" name="treck" size="150" align="center" placeholder="Пример: YF123456789RU" /></td>
</form>
<?php
$treck = $_POST['treck'];
$posts = "BarCode=$treck&&searchsign=1";
$url = "http://www.russianpost.ru/resp_engine.aspx?Path=rp/servise/ru/home/postuslug/trackingpo";
$br = "Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)";
if( $ch = curl_init() ) {
curl_setopt($ch, CURLOPT_POST,1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $posts);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_USERAGENT, $br);
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
$res = curl_exec($ch);
curl_close($ch);
}
preg_match('|<table class="pagetext">(.*)</table>|',$res,$ok);
print_r($ok);
?>
        </body>
</html>