## Example

`

     int curl_multi_exec ( resource $mh , int &$still_running )

`

## Description

Processes each of the handles in the stack. This method can be called whether or not a handle needs to read or write data.

## Return Values

A cURL code defined in the cURL Predefined Constants. Note: This only returns errors regarding the whole multi stack. There might still have occurred problems on individual transfers even when this function returns CURLM_OK.