Parse error: syntax error, unexpected '.'

I am trying to install Word Press and I have a syntax error that I can't work out in my php code.

Here is the error:
Parse error: syntax error, unexpected '.' in /home/family/public_html/blog/wp-includes/user.php on line 588

Here is the section of code it refers to - line 588 begins with 'show_option_all'

function wp_dropdown_users( $args = '' ) {
global $wpdb;
$defaults = array(
'show_option_all'../../blog/wp-includes/ => '', 'show_option_none'../../blog/wp-includes/ => '',
'orderby'../../blog/wp-includes/ => 'display_name', 'order'../../blog/wp-includes/ => 'ASC',
'include'../../blog/wp-includes/ => '', 'exclude' => '', 'multi' => 0,
'show' => 'display_name', 'echo' => 1,
'selected' => 0, 'name' => 'user', 'class' => '', 'blog_id' => $GLOBALS['blog_id'],
'id' => '',
);

Please can you help me?

How has all of this made it into the array?

../../blog/wp-includes/

I don't know, is that the problem? Do you think it could be related to where the folder with all the files is?

Will it help if I create a hosting account specifically for the Blog?

I don't know, is that the problem?

Yup. However those paths are getting into the array is what you need to sort. They shouldn't be there.

OK, I think I need to start again. Thank you very much for your help :)