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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.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 2427 | /** |
| 2428 | * Filters the WordPress salt. |
| 2429 | * |
| 2430 | * @since 2.5.0 |
| 2431 | * |
| 2432 | * @param string $cached_salt Cached salt for the given scheme. |
| 2433 | * @param string $scheme Authentication scheme. Values include 'auth', |
| 2434 | * 'secure_auth', 'logged_in', and 'nonce'. |
| 2435 | */ |
| 2436 | return apply_filters( 'salt', $cached_salts[ $scheme ], $scheme ); |
| 2437 | } |
| 2438 | |
| 2439 | static $duplicated_keys; |
| 2440 | if ( null === $duplicated_keys ) { |
| 2441 | $duplicated_keys = array( |
| 2442 | 'put your unique phrase here' => true, |
| 2443 | ); |
| 2444 | |
| 2445 | /* |
| Line | Code |
| 2492 | update_site_option( 'secret_key', $values['key'] ); |
| 2493 | } |
| 2494 | } |
| 2495 | $values['salt'] = hash_hmac( 'md5', $scheme, $values['key'] ); |
| 2496 | } |
| 2497 | |
| 2498 | $cached_salts[ $scheme ] = $values['key'] . $values['salt']; |
| 2499 | |
| 2500 | /** This filter is documented in wp-includes/pluggable.php */ |
| 2501 | return apply_filters( 'salt', $cached_salts[ $scheme ], $scheme ); |
| 2502 | } |
| 2503 | endif; |
| 2504 | |
| 2505 | if ( ! function_exists( 'wp_hash' ) ) : |
| 2506 | /** |
| 2507 | * Gets hash of given string. |
| 2508 | * |
| 2509 | * @since 2.0.3 |
| 2510 | * |