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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 |
|---|---|
| 739 | $this->register_globals(); |
| 740 | |
| 741 | /** |
| 742 | * Fires once the WordPress environment has been set up. |
| 743 | * |
| 744 | * @since 2.1.0 |
| 745 | * |
| 746 | * @param WP $this Current WordPress environment instance (passed by reference). |
| 747 | */ |
| 748 | do_action_ref_array( 'wp', array( &$this ) ); |
| 749 | } |
| 750 | } |
| 751 | |