wp_style_add_data()

wp_style_add_data() — Adds metadata to a CSS stylesheet. Works only if the stylesheet has already been registered. Possible values for $key and $value: ‘rtl’ bool|string To declare an RTL stylesheet. ‘suffix’ string Optional suffix, used in combination with RTL. ‘alt’ bool For rel=”alternate stylesheet”. ‘title’ string For preferred/alternate stylesheets. ‘path’ string The absolute path to a stylesheet. Stylesheet will load inline when ‘path’ is set.

Inputs: $handle (string): Name of the stylesheet. $key (string): Name of data point for which we’re storing a value. Accepts ‘rtl’ and ‘suffix’, ‘alt’, ‘title’ and ‘path’. $value (mixed): String containing the CSS data to be added.

Returns bool: True on success, false on failure.