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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 |
|---|---|
| 537 | if ( isset( $_GET['wp_lang'] ) ) { |
| 538 | setcookie( 'wp_lang', sanitize_text_field( $_GET['wp_lang'] ), 0, COOKIEPATH, COOKIE_DOMAIN, $secure ); |
| 539 | } |
| 540 | |
| 541 | /** |
| 542 | * Fires when the login form is initialized. |
| 543 | * |
| 544 | * @since 3.2.0 |
| 545 | */ |
| 546 | do_action( 'login_init' ); |
| 547 | |
| 548 | /** |
| 549 | * Fires before a specified login form action. |
| 550 | * |
| 551 | * The dynamic portion of the hook name, `$action`, refers to the action |
| 552 | * that brought the visitor to the login form. |
| 553 | * |
| 554 | * Possible hook names include: |
| 555 | * |