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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 |
|---|---|
| 1900 | * Filters the registration arguments when registering a setting. |
| 1901 | * |
| 1902 | * @since 4.7.0 |
| 1903 | * |
| 1904 | * @param array $args Array of setting registration arguments. |
| 1905 | * @param array $defaults Array of default arguments. |
| 1906 | * @param string $option_group Setting group. |
| 1907 | * @param string $option_name Setting name. |
| 1908 | */ |
| 1909 | $args = apply_filters( 'register_setting_args', $args, $defaults, $option_group, $option_name ); |
| 1910 | $args = wp_parse_args( $args, $defaults ); |
| 1911 | |
| 1912 | if ( ! is_array( $wp_registered_settings ) ) { |
| 1913 | $wp_registered_settings = array(); |
| 1914 | } |
| 1915 | |
| 1916 | if ( 'misc' == $option_group ) { |
| 1917 | _deprecated_argument( __FUNCTION__, '3.0.0', |
| 1918 | /* translators: %s: misc */ |