WP hooks navigation: Home/browse • Actions index • Filters index
To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
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 |
|---|---|
| 3172 | |
| 3173 | /** |
| 3174 | * Filters the rel values that are added to links with `target` attribute. |
| 3175 | * |
| 3176 | * @since 5.1.0 |
| 3177 | * |
| 3178 | * @param string $rel The rel values. |
| 3179 | * @param string $link_html The matched content of the link tag including all HTML attributes. |
| 3180 | */ |
| 3181 | $rel = apply_filters( 'wp_targeted_link_rel', 'noopener noreferrer', $link_html ); |
| 3182 | |
| 3183 | // Avoid additional regex if the filter removes rel values. |
| 3184 | if ( ! $rel ) { |
| 3185 | return "<a $link_html>"; |
| 3186 | } |
| 3187 | |
| 3188 | // Value with delimiters, spaces around are optional. |
| 3189 | $attr_regex = '|rel\s*=\s*?(\\\\{0,1}["\'])(.*?)\\1|i'; |
| 3190 | preg_match( $attr_regex, $link_html, $rel_match ); |