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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 |
|---|---|
| 493 | if ( isset( $_GET['wp_lang'] ) ) { |
| 494 | setcookie( 'wp_lang', sanitize_text_field( $_GET['wp_lang'] ), 0, COOKIEPATH, COOKIE_DOMAIN, $secure ); |
| 495 | } |
| 496 | |
| 497 | /** |
| 498 | * Fires when the login form is initialized. |
| 499 | * |
| 500 | * @since 3.2.0 |
| 501 | */ |
| 502 | do_action( 'login_init' ); |
| 503 | |
| 504 | /** |
| 505 | * Fires before a specified login form action. |
| 506 | * |
| 507 | * The dynamic portion of the hook name, `$action`, refers to the action |
| 508 | * that brought the visitor to the login form. |
| 509 | * |
| 510 | * Possible hook names include: |
| 511 | * |