php curl获取响应头和响应体

function bodys($sUrl){
    
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $sUrl);
    curl_setopt($ch, CURLOPT_HEADER, TRUE);    //表示需要response header
    curl_setopt($ch, CURLOPT_NOBODY, FALSE); //表示需要response body
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, FALSE);
    curl_setopt($ch, CURLOPT_AUTOREFERER, TRUE);
    curl_setopt($ch, CURLOPT_TIMEOUT, 120);
    $result = curl_exec($ch);
    if (curl_getinfo($ch, CURLINFO_HTTP_CODE) == '200') {
        $headerSize = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
        $header = substr($result, 0, $headerSize);
        $body = substr($result, $headerSize);
        return $body;
    }
    return NULL;
    
}