add_cssclass

The timeline below displays how wordpress function add_cssclass has changed across different WordPress versions. If a version is not listed, refer to the next available version below.

WordPress Version: 6.1

/**
 * Adds a CSS class to a string.
 *
 * @since 2.7.0
 *
 * @param string $class_to_add The CSS class to add.
 * @param string $classes      The string to add the CSS class to.
 * @return string The string with the CSS class added.
 */
function add_cssclass($class_to_add, $classes)
{
    if (empty($classes)) {
        return $class_to_add;
    }
    return $classes . ' ' . $class_to_add;
}

WordPress Version: 5.1

/**
 * @param string $add
 * @param string $class
 * @return string
 */
function add_cssclass($add, $class)
{
    $class = empty($class) ? $add : $class .= ' ' . $add;
    return $class;
}

WordPress Version: 4.3

/**
 *
 * @param string $add
 * @param string $class
 * @return string
 */
function add_cssclass($add, $class)
{
    $class = empty($class) ? $add : $class .= ' ' . $add;
    return $class;
}

WordPress Version: 3.7

function add_cssclass($add, $class)
{
    $class = empty($class) ? $add : $class .= ' ' . $add;
    return $class;
}