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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 |
|---|---|
| 2373 | /** |
| 2374 | * Filters the WordPress salt. |
| 2375 | * |
| 2376 | * @since 2.5.0 |
| 2377 | * |
| 2378 | * @param string $cached_salt Cached salt for the given scheme. |
| 2379 | * @param string $scheme Authentication scheme. Values include 'auth', |
| 2380 | * 'secure_auth', 'logged_in', and 'nonce'. |
| 2381 | */ |
| 2382 | return apply_filters( 'salt', $cached_salts[ $scheme ], $scheme ); |
| 2383 | } |
| 2384 | |
| 2385 | static $duplicated_keys; |
| 2386 | if ( null === $duplicated_keys ) { |
| 2387 | $duplicated_keys = array( 'put your unique phrase here' => true ); |
| 2388 | foreach ( array( 'AUTH', 'SECURE_AUTH', 'LOGGED_IN', 'NONCE', 'SECRET' ) as $first ) { |
| 2389 | foreach ( array( 'KEY', 'SALT' ) as $second ) { |
| 2390 | if ( ! defined( "{$first}_{$second}" ) ) { |
| 2391 | continue; |
| Line | Code |
| 2428 | update_site_option( 'secret_key', $values['key'] ); |
| 2429 | } |
| 2430 | } |
| 2431 | $values['salt'] = hash_hmac( 'md5', $scheme, $values['key'] ); |
| 2432 | } |
| 2433 | |
| 2434 | $cached_salts[ $scheme ] = $values['key'] . $values['salt']; |
| 2435 | |
| 2436 | /** This filter is documented in wp-includes/pluggable.php */ |
| 2437 | return apply_filters( 'salt', $cached_salts[ $scheme ], $scheme ); |
| 2438 | } |
| 2439 | endif; |
| 2440 | |
| 2441 | if ( ! function_exists( 'wp_hash' ) ) : |
| 2442 | /** |
| 2443 | * Get hash of given string. |
| 2444 | * |
| 2445 | * @since 2.0.3 |
| 2446 | * |