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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 |
|---|---|
| 175 | if (isset($this->extra_query_vars[$var])) |
| 176 | $this->query_vars[$var] = $this->extra_query_vars[$var]; |
| 177 | elseif (isset($GLOBALS[$var]) && '' != $GLOBALS[$var]) |
| 178 | $this->query_vars[$var] = $GLOBALS[$var]; |
| 179 | } |
| 180 | |
| 181 | if ( isset($error) ) |
| 182 | $this->query_vars['error'] = $error; |
| 183 | |
| 184 | $this->query_vars = apply_filters('request', $this->query_vars); |
| 185 | |
| 186 | do_action_ref_array('parse_request', array(&$this)); |
| 187 | } |
| 188 | |
| 189 | function send_headers() { |
| 190 | @header('X-Pingback: '. get_bloginfo('pingback_url')); |
| 191 | if ( is_user_logged_in() ) |
| 192 | nocache_headers(); |
| 193 | if ( !empty($this->query_vars['error']) && '404' == $this->query_vars['error'] ) { |