curl_multi_select 5.3+

[zckernel]

Its hapens that on my PHP 5.3.27 I got an infinite loop because curl_multi_select($this->mc)
always return -1.

I have changed the correspond block to:

while($this->running && ($this->execStatus == CURLM_OK
|| $this->execStatus == CURLM_CALL_MULTI_PERFORM))
{
usleep($outerSleepInt);
$outerSleepInt *= $this->sleepIncrement;
if(curl_multi_select($this->mc) == -1)
usleep(100);

    do{
      $this->execStatus = curl_multi_exec($this->mc, $this->running);
      usleep($innerSleepInt);
      $innerSleepInt *= $this->sleepIncrement;
    }while($this->execStatus==CURLM_CALL_MULTI_PERFORM);
    $innerSleepInt = 1;

    $this->storeResponses();

[jmathai]

I believe this is a duplicate of gh-9. Closing this in favor of that. I'm using this in another project on 5.3+ and will be updating this library. Will check if that solves this issue.