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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 |
|---|---|
| 2392 | /** |
| 2393 | * Filters the WordPress salt. |
| 2394 | * |
| 2395 | * @since 2.5.0 |
| 2396 | * |
| 2397 | * @param string $cached_salt Cached salt for the given scheme. |
| 2398 | * @param string $scheme Authentication scheme. Values include 'auth', |
| 2399 | * 'secure_auth', 'logged_in', and 'nonce'. |
| 2400 | */ |
| 2401 | return apply_filters( 'salt', $cached_salts[ $scheme ], $scheme ); |
| 2402 | } |
| 2403 | |
| 2404 | static $duplicated_keys; |
| 2405 | if ( null === $duplicated_keys ) { |
| 2406 | $duplicated_keys = array( |
| 2407 | 'put your unique phrase here' => true, |
| 2408 | /* |
| 2409 | * translators: This string should only be translated if wp-config-sample.php is localized. |
| 2410 | * You can check the localized release package or |
| Line | Code |
| 2455 | update_site_option( 'secret_key', $values['key'] ); |
| 2456 | } |
| 2457 | } |
| 2458 | $values['salt'] = hash_hmac( 'md5', $scheme, $values['key'] ); |
| 2459 | } |
| 2460 | |
| 2461 | $cached_salts[ $scheme ] = $values['key'] . $values['salt']; |
| 2462 | |
| 2463 | /** This filter is documented in wp-includes/pluggable.php */ |
| 2464 | return apply_filters( 'salt', $cached_salts[ $scheme ], $scheme ); |
| 2465 | } |
| 2466 | endif; |
| 2467 | |
| 2468 | if ( ! function_exists( 'wp_hash' ) ) : |
| 2469 | /** |
| 2470 | * Gets hash of given string. |
| 2471 | * |
| 2472 | * @since 2.0.3 |
| 2473 | * |