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Understanding Source Code

The best way to understand what a hook does is to look at where it occurs in the source code.

Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.

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Line Code
526       * @param string|array $query_args Passed to {@link parse_request()}
527       */
528      function main($query_args = '') {
529           $this->init();
530           $this->parse_request($query_args);
531           $this->send_headers();
532           $this->query_posts();
533           $this->handle_404();
534           $this->register_globals();
535           do_action_ref_array('wp', array(&$this));
536      }
537
538 }
539
540 /**
541  * Helper class to remove the need to use eval to replace $matches[] in query strings.
542  *
543  * @since 2.9.0
544  */