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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 |
|---|---|
| 1732 | /** |
| 1733 | * Filter the WordPress salt. |
| 1734 | * |
| 1735 | * @since 2.5.0 |
| 1736 | * |
| 1737 | * @param string $cached_salt Cached salt for the given scheme. |
| 1738 | * @param string $scheme Authentication scheme. Values include 'auth', |
| 1739 | * 'secure_auth', 'logged_in', and 'nonce'. |
| 1740 | */ |
| 1741 | return apply_filters( 'salt', $cached_salts[ $scheme ], $scheme ); |
| 1742 | } |
| 1743 | |
| 1744 | static $duplicated_keys; |
| 1745 | if ( null === $duplicated_keys ) { |
| 1746 | $duplicated_keys = array( 'put your unique phrase here' => true ); |
| 1747 | foreach ( array( 'AUTH', 'SECURE_AUTH', 'LOGGED_IN', 'NONCE', 'SECRET' ) as $first ) { |
| 1748 | foreach ( array( 'KEY', 'SALT' ) as $second ) { |
| 1749 | if ( ! defined( "{$first}_{$second}" ) ) |
| 1750 | continue; |
| Line | Code |
| 1781 | update_site_option( 'secret_key', $key ); |
| 1782 | } |
| 1783 | } |
| 1784 | $salt = hash_hmac( 'md5', $scheme, $key ); |
| 1785 | } |
| 1786 | |
| 1787 | $cached_salts[ $scheme ] = $key . $salt; |
| 1788 | |
| 1789 | /** This filter is documented in wp-includes/pluggable.php */ |
| 1790 | return apply_filters( 'salt', $cached_salts[ $scheme ], $scheme ); |
| 1791 | } |
| 1792 | endif; |
| 1793 | |
| 1794 | if ( !function_exists('wp_hash') ) : |
| 1795 | /** |
| 1796 | * Get hash of given string. |
| 1797 | * |
| 1798 | * @since 2.0.3 |
| 1799 | * @uses wp_salt() Get WordPress salt |