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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 |
---|---|
2095 | /** |
2096 | * Filters the WordPress salt. |
2097 | * |
2098 | * @since 2.5.0 |
2099 | * |
2100 | * @param string $cached_salt Cached salt for the given scheme. |
2101 | * @param string $scheme Authentication scheme. Values include 'auth', |
2102 | * 'secure_auth', 'logged_in', and 'nonce'. |
2103 | */ |
2104 | return apply_filters( 'salt', $cached_salts[ $scheme ], $scheme ); |
2105 | } |
2106 |
|
2107 | static $duplicated_keys; |
2108 | if ( null === $duplicated_keys ) { |
2109 | $duplicated_keys = array( 'put your unique phrase here' => true ); |
2110 | foreach ( array( 'AUTH', 'SECURE_AUTH', 'LOGGED_IN', 'NONCE', 'SECRET' ) as $first ) { |
2111 | foreach ( array( 'KEY', 'SALT' ) as $second ) { |
2112 | if ( ! defined( "{$first}_{$second}" ) ) { |
2113 | continue; |
Line | Code |
2150 | update_site_option( 'secret_key', $values['key'] ); |
2151 | } |
2152 | } |
2153 | $values['salt'] = hash_hmac( 'md5', $scheme, $values['key'] ); |
2154 | } |
2155 |
|
2156 | $cached_salts[ $scheme ] = $values['key'] . $values['salt']; |
2157 |
|
2158 | /** This filter is documented in wp-includes/pluggable.php */ |
2159 | return apply_filters( 'salt', $cached_salts[ $scheme ], $scheme ); |
2160 | } |
2161 | endif; |
2162 |
|
2163 | if ( !function_exists('wp_hash') ) : |
2164 | /** |
2165 | * Get hash of given string. |
2166 | * |
2167 | * @since 2.0.3 |
2168 | * |