how to get php cli processes share variables via a

问题:

i have apc.enable_cli=1 in php.ini for cli;

i tested sharing variables with apc with this script:

<?php
$apctest=apc_fetch('apctest');
echo "apctest was " . $apctest;
echo "\n";
if($argc>1){
    $newval=$argv[1];
}else{
    $newval='ok';
}
echo "setting apctest to " . $newval;
echo "\n";
apc_store('apctest',$newval);
sleep(30);

i runned it with

php test_cli_apc.php > /dev/null &

and then within 30 seconds runned

php test_cli_apc.php

but it has outputted "apctest was " , not "apctest was ok"

i have tried same script with "apc" changed to "apcu" but it also does not work in same way.