Unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR

I’m trying to run a WordPress plugin, and I get the following error:

Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION
or T_FUNCTION or T_VAR or '}' in
/nfs/c03/h05/mnt/52704/domains/creathive.net/html/wp-content/plugins/qr-code-tag/lib/qrct/QrctWp.php
on line 13

What would cause this error? Line 13 is the public bit.

EDIT: Here is some code:

class QrctWp
{
    public $pluginName = 'QR Code Tag';