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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 |
|---|---|
| 678 | $this->register_globals(); |
| 679 | |
| 680 | /** |
| 681 | * Fires once the WordPress environment has been set up. |
| 682 | * |
| 683 | * @since 2.1.0 |
| 684 | * |
| 685 | * @param WP &$this Current WordPress environment instance (passed by reference). |
| 686 | */ |
| 687 | do_action_ref_array( 'wp', array( &$this ) ); |
| 688 | } |
| 689 | } |
| 690 | |
| 691 | /** |
| 692 | * Helper class to remove the need to use eval to replace $matches[] in query strings. |
| 693 | * |
| 694 | * @since 2.9.0 |
| 695 | */ |
| 696 | class WP_MatchesMapRegex { |