URL appearing on top of the page only in production website [closed]

Question

I've just pushed a wordpress website to the production host and on top appeared an URL which should not be there. Here's the link.

I checked the source code, but I can't find anything that can output that url and anyway on the localhost and testing environments that url does not appear.

Any idea what is generating it?

Here's the header.php file.

Answer 1

ok, it took me a while but in the end (with the help of user tbuteler) I found the problem.

Here's the code:

$url = 'http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js'; // the URL to check against  
$test_url = @fopen($url,'r'); // test parameters  
if( $test_url !== false ) { // test if the URL exists  

function load_external_jQuery() { // load external file  
    wp_deregister_script( 'jquery' ); // deregisters the default WordPress jQuery  
    wp_register_script('jquery', 'http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js'); // register the external file  
    wp_enqueue_script('jquery'); // enqueue the external file  
    wp_register_script('jquery-ui', 'http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/jquery-ui.min.js'); // register the external file  
    wp_enqueue_script('jquery-ui'); // enqueue the external file  
}  

add_action('wp_enqueue_scripts', 'load_external_jQuery'); // initiate the function  
} else {  
function load_local_jQuery() {  
    wp_deregister_script('jquery'); // initiate the function  
    wp_register_script('jquery', get_template_directory_uri() .'/javascripts/jquery.min.js', __FILE__, false, '1.7.2', true); // register the local file  
    wp_enqueue_script('jquery'); // enqueue the local file  
    wp_register_script('jquery-ui', 'http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/jquery-ui.min.js'); // register the external file  
    wp_enqueue_script('jquery-ui'); // enqueue the external file  
}  

add_action('wp_enqueue_scripts', 'load_local_jQuery'); // initiate the function  
}  

In the "else" part of the code there is a call to bloginfo('template_url). The idea would be to return the path with the theme directory, but bloginfo() seems to echo that path, so it appears on the page. I changed it with this:

    wp_register_script('jquery', get_template_directory_uri() .'/javascripts/jquery.min.js', __FILE__, false, '1.7.2', true); // register the local file  

So now it's working. The other problem is that the it shouldn't enter the "else" part, since it should just use the google url, but it seems that some setting on the server is making the call to fopen() to fail.