2 hàm CURL hay để lấy và gửi (GET & POST) dữ liệu từ trang khác

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1. Hàm này để lấy dữ liệu

<?
//-----------------------------------------------------------------------------------
function getPage($url, $referer, $timeout, $header){
    if(!isset($timeout))
        $timeout=30;
    $curl = curl_init();
    if(strstr($referer,"://")){
        curl_setopt ($curl, CURLOPT_REFERER, $referer);
    }
    curl_setopt ($curl, CURLOPT_URL, $url);
    curl_setopt ($curl, CURLOPT_TIMEOUT, $timeout);
    curl_setopt ($curl, CURLOPT_USERAGENT, sprintf("Mozilla/%d.0",rand(4,5)));
    curl_setopt ($curl, CURLOPT_HEADER, (int)$header);
    curl_setopt ($curl, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt ($curl, CURLOPT_SSL_VERIFYPEER, 0);
    $html = curl_exec ($curl);
    curl_close ($curl);
    return $html;
}
//-----------------------------------------------------------------------------------
?>

2.Hàm này để post dữ liệu

  <?
//-----------------------------------------------------------------------------------
function postPage($url,$pvars,$referer,$timeout){
    if(!isset($timeout))
        $timeout=30;
    $curl = curl_init();
    $post = http_build_query($pvars);
    if(isset($referer)){
        curl_setopt ($curl, CURLOPT_REFERER, $referer);
    }
    curl_setopt ($curl, CURLOPT_URL, $url);
    curl_setopt ($curl, CURLOPT_TIMEOUT, $timeout);
    curl_setopt ($curl, CURLOPT_USERAGENT, sprintf("Mozilla/%d.0",rand(4,5)));
    curl_setopt ($curl, CURLOPT_HEADER, 0);
    curl_setopt ($curl, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt ($curl, CURLOPT_SSL_VERIFYPEER, 0);
    curl_setopt ($curl, CURLOPT_POST, 1);
    curl_setopt ($curl, CURLOPT_POSTFIELDS, $post);
    curl_setopt ($curl, CURLOPT_HTTPHEADER,
        array("Content-type: application/x-www-form-urlencoded"));
    $html = curl_exec ($curl);
    curl_close ($curl);
    return $html;
}
//-----------------------------------------------------------------------------------
?>