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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 |
|---|---|
| 518 | * @param string|array $query_args Passed to {@link parse_request()} |
| 519 | */ |
| 520 | function main($query_args = '') { |
| 521 | $this->init(); |
| 522 | $this->parse_request($query_args); |
| 523 | $this->send_headers(); |
| 524 | $this->query_posts(); |
| 525 | $this->handle_404(); |
| 526 | $this->register_globals(); |
| 527 | do_action_ref_array('wp', array(&$this)); |
| 528 | } |
| 529 | |
| 530 | } |
| 531 | |
| 532 | /** |
| 533 | * Helper class to remove the need to use eval to replace $matches[] in query strings. |
| 534 | * |
| 535 | * @since 2.9.0 |
| 536 | */ |