CURLOPT_TIMEOUT，是否存在“其他”功能？

Question

    <?php
function get_random_proxy()
{
    srand ((double)microtime()*1000000);
    $f_contents = file ("proxy.txt");
    $line = $f_contents[array_rand ($f_contents)];
    return $line;
}
$proxy = get_random_proxy(); 
            $ch = curl_init(); 
            curl_setopt($ch, CURLOPT_URL, "example.com");
            curl_setopt($ch, CURLOPT_PROXY,$proxy); 
            curl_setopt($ch, CURLOPT_TIMEOUT ,30);
            curl_exec($ch);  
            curl_close($ch);      
    ?>

curl will close connection if can not connect within the 30 seconds.

as you can see, i'm using proxy list. however, some proxy ips sometimes have problems to connect within the 30 seconds, and curl is closing connection when can not load in 30 seconds.

i wanna try another ip for curl connect if curl timeout reached. right now, curl is closing everything if ip isn't working. i wanna try another ip. well, could you please suggest me a function?

edited for @rubayeet. added new proxy function

Answer 1

您只需要使用curl_errno来测试是否发生了CURLE_OPERATION_TIMEDOUT

Answer 2

function get($url, $proxy){
    $ch = curl_init(); 
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_PROXY,$proxy); 
    curl_setopt($ch, CURLOPT_TIMEOUT ,30);
    $response = curl_exec($ch);  
    curl_close($ch);

    return $response
}

$url = 'example.com';

while(true) {
   $proxy = get_random_proxy();
   $response = get($url, $proxy);
   if ($response === False) continue;
   else break;
}

//do something with $response

Answer 3

You have to create a new curl session to connect to another proxy. So put a foreach loop around your code and loop through your proxy array.

Also you can use curl_errno() and curl_error() to check for an error (like your timeout).

Maybe it would be useful to set CURLOPT_RETURNTRANSFER and load it into a var to modify or work on it.