可用的php curl 请求

function http_request( $url, $post = '', $timeout = 5 ){
    if( empty( $url ) ){
        return ;
    }
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);

    if( $post != '' && !empty( $post ) ){
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
        curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json', 'Content-Length: ' . strlen($post)));
    }
    curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
    $result = curl_exec($ch);
    curl_close($ch);
    return $result;
}