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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 |
|---|---|
| 2102 | /** |
| 2103 | * Filters the WordPress salt. |
| 2104 | * |
| 2105 | * @since 2.5.0 |
| 2106 | * |
| 2107 | * @param string $cached_salt Cached salt for the given scheme. |
| 2108 | * @param string $scheme Authentication scheme. Values include 'auth', |
| 2109 | * 'secure_auth', 'logged_in', and 'nonce'. |
| 2110 | */ |
| 2111 | return apply_filters( 'salt', $cached_salts[ $scheme ], $scheme ); |
| 2112 | } |
| 2113 | |
| 2114 | static $duplicated_keys; |
| 2115 | if ( null === $duplicated_keys ) { |
| 2116 | $duplicated_keys = array( 'put your unique phrase here' => true ); |
| 2117 | foreach ( array( 'AUTH', 'SECURE_AUTH', 'LOGGED_IN', 'NONCE', 'SECRET' ) as $first ) { |
| 2118 | foreach ( array( 'KEY', 'SALT' ) as $second ) { |
| 2119 | if ( ! defined( "{$first}_{$second}" ) ) { |
| 2120 | continue; |
| Line | Code |
| 2157 | update_site_option( 'secret_key', $values['key'] ); |
| 2158 | } |
| 2159 | } |
| 2160 | $values['salt'] = hash_hmac( 'md5', $scheme, $values['key'] ); |
| 2161 | } |
| 2162 | |
| 2163 | $cached_salts[ $scheme ] = $values['key'] . $values['salt']; |
| 2164 | |
| 2165 | /** This filter is documented in wp-includes/pluggable.php */ |
| 2166 | return apply_filters( 'salt', $cached_salts[ $scheme ], $scheme ); |
| 2167 | } |
| 2168 | endif; |
| 2169 | |
| 2170 | if ( !function_exists('wp_hash') ) : |
| 2171 | /** |
| 2172 | * Get hash of given string. |
| 2173 | * |
| 2174 | * @since 2.0.3 |
| 2175 | * |