checking memory_limit in PHP

Question

I\'m need to check if memory_limit is at least 64M in my script installer. This is just part of PHP code that should work, but probably due to this

Answer 1

Try to convert the value first (eg: 64M -> 64 * 1024 * 1024). After that, do comparison and print the result.

 nnn MB
    } else if ($matches[2] == 'K') {
        $memory_limit = $matches[1] * 1024; // nnnK -> nnn KB
    }
}

$ok = ($memory_limit >= 64 * 1024 * 1024); // at least 64M?

echo '';
echo '' . $memory_limit . '';
echo '' . ($ok ? 1 : 0) . '';
echo '';

Please note that the above code is just an idea. Don't forget to handle -1 (no memory limit), integer-only value (value in bytes), G (value in gigabytes), k/m/g (value in kilobytes, megabytes, gigabytes because shorthand is case-insensitive), etc.