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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 |
|---|---|
| 548 | * Filter the HTML link to the Registration or Admin page. |
| 549 | * |
| 550 | * Users are sent to the admin page if logged-in, or the registration page |
| 551 | * if enabled and logged-out. |
| 552 | * |
| 553 | * @since 1.5.0 |
| 554 | * |
| 555 | * @param string $link The HTML code for the link to the Registration or Admin page. |
| 556 | */ |
| 557 | $link = apply_filters( 'register', $link ); |
| 558 | |
| 559 | if ( $echo ) { |
| 560 | echo $link; |
| 561 | } else { |
| 562 | return $link; |
| 563 | } |
| 564 | } |
| 565 | |
| 566 | /** |