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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 1996 | */ |
| 1997 | function content_url($path = '') { |
| 1998 | $url = WP_CONTENT_URL; |
| 1999 | if ( 0 === strpos($url, 'http') && is_ssl() ) |
| 2000 | $url = str_replace( 'http://', 'https://', $url ); |
| 2001 | |
| 2002 | if ( !empty($path) && is_string($path) && strpos($path, '..') === false ) |
| 2003 | $url .= '/' . ltrim($path, '/'); |
| 2004 | |
| 2005 | return apply_filters('content_url', $url, $path); |
| 2006 | } |
| 2007 | |
| 2008 | /** |
| 2009 | * Retrieve the url to the plugins directory or to a specific file within that directory. |
| 2010 | * You can hardcode the plugin slug in $path or pass __FILE__ as a second argument to get the correct folder name. |
| 2011 | * |
| 2012 | * @package WordPress |
| 2013 | * @since 2.6.0 |
| 2014 | * |