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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 |
|---|---|
| 1991 | /** |
| 1992 | * Filters the WordPress salt. |
| 1993 | * |
| 1994 | * @since 2.5.0 |
| 1995 | * |
| 1996 | * @param string $cached_salt Cached salt for the given scheme. |
| 1997 | * @param string $scheme Authentication scheme. Values include 'auth', |
| 1998 | * 'secure_auth', 'logged_in', and 'nonce'. |
| 1999 | */ |
| 2000 | return apply_filters( 'salt', $cached_salts[ $scheme ], $scheme ); |
| 2001 | } |
| 2002 | |
| 2003 | static $duplicated_keys; |
| 2004 | if ( null === $duplicated_keys ) { |
| 2005 | $duplicated_keys = array( 'put your unique phrase here' => true ); |
| 2006 | foreach ( array( 'AUTH', 'SECURE_AUTH', 'LOGGED_IN', 'NONCE', 'SECRET' ) as $first ) { |
| 2007 | foreach ( array( 'KEY', 'SALT' ) as $second ) { |
| 2008 | if ( ! defined( "{$first}_{$second}" ) ) { |
| 2009 | continue; |
| Line | Code |
| 2046 | update_site_option( 'secret_key', $values['key'] ); |
| 2047 | } |
| 2048 | } |
| 2049 | $values['salt'] = hash_hmac( 'md5', $scheme, $values['key'] ); |
| 2050 | } |
| 2051 | |
| 2052 | $cached_salts[ $scheme ] = $values['key'] . $values['salt']; |
| 2053 | |
| 2054 | /** This filter is documented in wp-includes/pluggable.php */ |
| 2055 | return apply_filters( 'salt', $cached_salts[ $scheme ], $scheme ); |
| 2056 | } |
| 2057 | endif; |
| 2058 | |
| 2059 | if ( !function_exists('wp_hash') ) : |
| 2060 | /** |
| 2061 | * Get hash of given string. |
| 2062 | * |
| 2063 | * @since 2.0.3 |
| 2064 | * |