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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 |
|---|---|
| 2201 | /** |
| 2202 | * Filters the WordPress salt. |
| 2203 | * |
| 2204 | * @since 2.5.0 |
| 2205 | * |
| 2206 | * @param string $cached_salt Cached salt for the given scheme. |
| 2207 | * @param string $scheme Authentication scheme. Values include 'auth', |
| 2208 | * 'secure_auth', 'logged_in', and 'nonce'. |
| 2209 | */ |
| 2210 | return apply_filters( 'salt', $cached_salts[ $scheme ], $scheme ); |
| 2211 | } |
| 2212 | |
| 2213 | static $duplicated_keys; |
| 2214 | if ( null === $duplicated_keys ) { |
| 2215 | $duplicated_keys = array( 'put your unique phrase here' => true ); |
| 2216 | foreach ( array( 'AUTH', 'SECURE_AUTH', 'LOGGED_IN', 'NONCE', 'SECRET' ) as $first ) { |
| 2217 | foreach ( array( 'KEY', 'SALT' ) as $second ) { |
| 2218 | if ( ! defined( "{$first}_{$second}" ) ) { |
| 2219 | continue; |
| Line | Code |
| 2256 | update_site_option( 'secret_key', $values['key'] ); |
| 2257 | } |
| 2258 | } |
| 2259 | $values['salt'] = hash_hmac( 'md5', $scheme, $values['key'] ); |
| 2260 | } |
| 2261 | |
| 2262 | $cached_salts[ $scheme ] = $values['key'] . $values['salt']; |
| 2263 | |
| 2264 | /** This filter is documented in wp-includes/pluggable.php */ |
| 2265 | return apply_filters( 'salt', $cached_salts[ $scheme ], $scheme ); |
| 2266 | } |
| 2267 | endif; |
| 2268 | |
| 2269 | if ( ! function_exists( 'wp_hash' ) ) : |
| 2270 | /** |
| 2271 | * Get hash of given string. |
| 2272 | * |
| 2273 | * @since 2.0.3 |
| 2274 | * |