function drupal_sort_css_js

Sorts CSS and JavaScript resources.

Callback for uasort() within:

• drupal_get_css()
• drupal_get_js()

This sort order helps optimize front-end performance while providing modules and themes with the necessary control for ordering the CSS and JavaScript appearing on a page.

Parameters

$a: First item for comparison. The compared items should be associative arrays of member items from drupal_add_css() or drupal_add_js().

$b: Second item for comparison.

See also

drupal_add_css()

drupal_add_js()

File

includes/common.inc, line 3298

Code

function drupal_sort_css_js($a, $b) {
    // First order by group, so that, for example, all items in the CSS_SYSTEM
    // group appear before items in the CSS_DEFAULT group, which appear before
    // all items in the CSS_THEME group. Modules may create additional groups by
    // defining their own constants.
    if ($a['group'] < $b['group']) {
        return -1;
    }
    elseif ($a['group'] > $b['group']) {
        return 1;
    }
    elseif ($a['every_page'] && !$b['every_page']) {
        return -1;
    }
    elseif (!$a['every_page'] && $b['every_page']) {
        return 1;
    }
    elseif ($a['weight'] < $b['weight']) {
        return -1;
    }
    elseif ($a['weight'] > $b['weight']) {
        return 1;
    }
    else {
        return 0;
    }
}