php if else issue detected

I'm trying to create an if else string on a php of prestashop,

I'm trying to make my site to run a code if the page is discount but run the other code if it is not... but dreamweaver says there are errors, what's wrong in it?

Thank you

this is the code

if ($page_name == 'discount')
{
 public static $definition = array(
    'table' => 'address',
    'primary' => 'id_address',
    'fields' => array(
        'id_customer' =>        array('type' => self::TYPE_INT, 'validate' => 'isNullOrUnsignedId', 'copy_post' => false),
        'id_manufacturer' =>    array('type' => self::TYPE_INT, 'validate' => 'isNullOrUnsignedId', 'copy_post' => false),
        'id_supplier' =>        array('type' => self::TYPE_INT, 'validate' => 'isNullOrUnsignedId', 'copy_post' => false),
        'id_warehouse' =>        array('type' => self::TYPE_INT, 'validate' => 'isNullOrUnsignedId', 'copy_post' => false),
        'id_country' =>        array('type' => self::TYPE_INT, 'validate' => 'isUnsignedId', 'required' => false),
        'id_state' =>            array('type' => self::TYPE_INT, 'validate' => 'isNullOrUnsignedId'),
        'alias' =>                array('type' => self::TYPE_STRING, 'validate' => 'isGenericName', 'required' => true, 'size' => 32),
        'company' =>            array('type' => self::TYPE_STRING, 'validate' => 'isGenericName', 'size' => 64),
        'lastname' =>            array('type' => self::TYPE_STRING, 'validate' => 'isName', 'required' => true, 'size' => 32),
        'firstname' =>            array('type' => self::TYPE_STRING, 'validate' => 'isName', 'required' => true, 'size' => 32),
        'vat_number' =>            array('type' => self::TYPE_STRING, 'validate' => 'isGenericName'),
        'address1' =>            array('type' => self::TYPE_STRING, 'validate' => 'isAddress', 'required' => false, 'size' => 128),
        'address2' =>            array('type' => self::TYPE_STRING, 'validate' => 'isAddress', 'size' => 128),
        'postcode' =>            array('type' => self::TYPE_STRING, 'validate' => 'isPostCode', 'size' => 12),
        'city' =>                array('type' => self::TYPE_STRING, 'validate' => 'isCityName', 'required' => false, 'size' => 64),
        'other' =>                array('type' => self::TYPE_STRING, 'validate' => 'isMessage', 'size' => 300),
        'phone' =>                array('type' => self::TYPE_STRING, 'validate' => 'isPhoneNumber', 'size' => 32),
        'phone_mobile' =>        array('type' => self::TYPE_STRING, 'validate' => 'isPhoneNumber', 'size' => 32),
        'dni' =>                array('type' => self::TYPE_STRING, 'validate' => 'isDniLite', 'size' => 16),
        'deleted' =>            array('type' => self::TYPE_BOOL, 'validate' => 'isBool', 'copy_post' => false),
        'date_add' =>            array('type' => self::TYPE_DATE, 'validate' => 'isDate', 'copy_post' => false),
        'date_upd' =>            array('type' => self::TYPE_DATE, 'validate' => 'isDate', 'copy_post' => false),
    ),
);
}

else
{
     public static $definition = array(
    'table' => 'address',
    'primary' => 'id_address',
    'fields' => array(
        'id_customer' =>        array('type' => self::TYPE_INT, 'validate' => 'isNullOrUnsignedId', 'copy_post' => false),
        'id_manufacturer' =>    array('type' => self::TYPE_INT, 'validate' => 'isNullOrUnsignedId', 'copy_post' => false),
        'id_supplier' =>        array('type' => self::TYPE_INT, 'validate' => 'isNullOrUnsignedId', 'copy_post' => false),
        'id_warehouse' =>        array('type' => self::TYPE_INT, 'validate' => 'isNullOrUnsignedId', 'copy_post' => false),
        'id_country' =>        array('type' => self::TYPE_INT, 'validate' => 'isUnsignedId', 'required' => true),
        'id_state' =>            array('type' => self::TYPE_INT, 'validate' => 'isNullOrUnsignedId'),
        'alias' =>                array('type' => self::TYPE_STRING, 'validate' => 'isGenericName', 'required' => true, 'size' => 32),
        'company' =>            array('type' => self::TYPE_STRING, 'validate' => 'isGenericName', 'size' => 64),
        'lastname' =>            array('type' => self::TYPE_STRING, 'validate' => 'isName', 'required' => true, 'size' => 32),
        'firstname' =>            array('type' => self::TYPE_STRING, 'validate' => 'isName', 'required' => true, 'size' => 32),
        'vat_number' =>            array('type' => self::TYPE_STRING, 'validate' => 'isGenericName'),
        'address1' =>            array('type' => self::TYPE_STRING, 'validate' => 'isAddress', 'required' => true, 'size' => 128),
        'address2' =>            array('type' => self::TYPE_STRING, 'validate' => 'isAddress', 'size' => 128),
        'postcode' =>            array('type' => self::TYPE_STRING, 'validate' => 'isPostCode', 'size' => 12),
        'city' =>                array('type' => self::TYPE_STRING, 'validate' => 'isCityName', 'required' => true, 'size' => 64),
        'other' =>                array('type' => self::TYPE_STRING, 'validate' => 'isMessage', 'size' => 300),
        'phone' =>                array('type' => self::TYPE_STRING, 'validate' => 'isPhoneNumber', 'size' => 32),
        'phone_mobile' =>        array('type' => self::TYPE_STRING, 'validate' => 'isPhoneNumber', 'size' => 32),
        'dni' =>                array('type' => self::TYPE_STRING, 'validate' => 'isDniLite', 'size' => 16),
        'deleted' =>            array('type' => self::TYPE_BOOL, 'validate' => 'isBool', 'copy_post' => false),
        'date_add' =>            array('type' => self::TYPE_DATE, 'validate' => 'isDate', 'copy_post' => false),
        'date_upd' =>            array('type' => self::TYPE_DATE, 'validate' => 'isDate', 'copy_post' => false),
    ),
);
}