PHP: Measure size in kilobytes of a object/array?

Question

• What\'s an appropriate way of measure a PHP objects actual size in bytes/kilobytes?

Reason for asking:
I am utilizing memcached for cache storage in

Answer 1

Well, since Memcached doesn't store raw objects (it actually stores the serialiezd version), you can do this:

$serializedFoo = serialize($foo);
if (function_exists('mb_strlen')) {
    $size = mb_strlen($serializedFoo, '8bit');
} else {
    $size = strlen($serializedFoo);
}

Answer 2

Another easy way pute content of array to file and then check file size.

$str = print_r($array, true);
file_put_contents('data.txt', $str);
$size = filesize('data.txt');