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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.
Line | Code |
---|---|
1878 | /** |
1879 | * Filters a sanitized username string. |
1880 | * |
1881 | * @since 2.0.1 |
1882 | * |
1883 | * @param string $username Sanitized username. |
1884 | * @param string $raw_username The username prior to sanitization. |
1885 | * @param bool $strict Whether to limit the sanitization to specific characters. Default false. |
1886 | */ |
1887 | return apply_filters( 'sanitize_user', $username, $raw_username, $strict ); |
1888 | } |
1889 |
|
1890 | /** |
1891 | * Sanitizes a string key. |
1892 | * |
1893 | * Keys are used as internal identifiers. Lowercase alphanumeric characters, dashes and underscores are allowed. |
1894 | * |
1895 | * @since 3.0.0 |
1896 | * |