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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 |
|---|---|
| 754 | $this->register_globals(); |
| 755 | |
| 756 | /** |
| 757 | * Fires once the WordPress environment has been set up. |
| 758 | * |
| 759 | * @since 2.1.0 |
| 760 | * |
| 761 | * @param WP $this Current WordPress environment instance (passed by reference). |
| 762 | */ |
| 763 | do_action_ref_array( 'wp', array( &$this ) ); |
| 764 | } |
| 765 | } |
| 766 | |