Trouble with APC extension

File upload progress

[optik]

I've installed the APC extension and have the following additions to my php.ini file

extension=apc.so
[apc]
apc.enabled = 1
apc.max_file_size = 300M
apc.rfc1867 = on

I've checked the install with this

if (!extension_loaded('apc')){
else{echo"installed";}

if (!function_exists('apc_fetch')){
}else{echo"installed";}

And it is showing as installed but when I try utilising APC_UPLOAD_PROGRESS
I don't get any data.

[optik]

looks like I need to upgrade PHP to 5.2