curl_multi_remove_handle
Since the docs are still lacking, here's an example of how to use the function. The following code will keep checking all active threads until one of them returns the HTTP 200 Ok status code, or simply end. On success, it will return the URL that worked.
<?php
$running=null;
do {
curl_multi_exec($mh,$running);
$ready=curl_multi_select($mh); // this will pause the loop
if($ready>0){
while($info=curl_multi_info_read($mh)){
$status=curl_getinfo($info['handle'],CURLINFO_HTTP_CODE);
if($status==200){
$successUrl=curl_getinfo($info['handle'],CURLINFO_EFFECTIVE_URL);
break 2;
}
}
}
} while ($running>0 && $ready!=-1);
?>
The question for the $ready variable is, if it will return the value before or after the timeout has occurred. From my tests it appears that it will return the value immediately, and only then pause the execution. That's because it's always zero the first time through the loop, even if the time limit is as high as 10sec. I've expected it to wait and only then return the value so that came unexpected to me.
As stated by someone else, it also doesn't seem to return the overall count of threads in the handle, but only that of the currently active ones.
curl_multi_select
(PHP 5)
curl_multi_select — Espera actividad en cualquier conexión en curl_multi
Descripción
int curl_multi_select
( resource $mh
[, float $timeout = 1.0
] )
Permanece bloqueado hasta que haya algún tipo de actividad en conexiones curl_multi.
Parámetros
- mh
-
El multi recurso cURL multi devuelto por curl_multi_init().
- timeout
-
Tiempo, en sengudos, para esperar por una respuesta.
Valores devueltos
Si funciona, devuelve el número de descripciones del contenedor de descripciones. Si falla, esta función devolverá -1 si la selección falla o en timeout (desde la llamada al sistema).
add a note
User Contributed Notes
curl_multi_select
Anonymous
24-Jul-2010 03:33
public at grik dot net
10-Aug-2008 01:38
This function blocks the calling process until there is activity on any of the connections opened by the curl_multi interface, or until the timeout period has expired.
In other words, it waits for data to be received in the opened connections.
Internally it fetches socket pointers with "curl_multi_fdset()" and runs the "select()" C function.
It returns in 3 cases:
1. Activity is detected on any socket;
2. Timeout has ended (second parameter);
3. Process received any signal (#man kill).
The function returns an integer:
* In case of activity it returns a number, usually 1.
I suppose, it returns the number of connections with activity detected.
* If timeout expires it returns 0
* In case of error it returns -1
Thanks for attention, hope this helps.