(PECL pecl_http >= 1.5.0)
http_persistent_handles_count — Stat persistent handles
List statistics about persistent handles usage.
   Returns persistent handles statistics as stdClass object on success or FALSE on failure.
  
Example #1 A http_persistent_handles_count() example
<?php
print_r(http_persistent_handles_count());
?>
The above example will output:
stdClass Object
(
    [http_request] => Array
        (
            [GLOBAL] => Array
                (
                    [used] => 0
                    [free] => 1
                )
        )
    [http_request_datashare] => Array
        (
            [GLOBAL] => Array
                (
                    [used] => 1
                    [free] => 0
                )
        )
    [http_request_pool] => Array
        (
        )
)