WOOF :: parent_theme_url( String $file, Boolean $timestamp = true, Boolean $root_relative = true )
A preset on the WOOF::theme_url to return a URL to a file or folder within the directory of the active theme, but forced to regard only the parent theme folder. This is a highly useful method for outputting stylesheets and scripts in the head of your templates, as it can also add timestamps for the URLs by default. Forcing the parent URL may be useful if you know that the child theme has an override file, but you still wish to include the parent theme’s copy of this file (for example, a stylesheet in the parent theme folder).
Parameters:
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A file or folder path relative to the active theme directory.
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Boolean $timestamp = true
Whether to add a timestamp to the end of the URL as a querystring. Note: timestamps are not added for directory paths. Timestamps help prevent aggressive browser caching by creating a URL that includes the date the file was last modified, which is generally seen as a unique request if the file has changed.
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Boolean $root_relative = true
Whether to make the URL root-relative (removes the domain and protocol).