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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 |
|---|---|
| 937 | * The dynamic portion of the hook name, `$name`, refers to the key name of |
| 938 | * the modification array. For example, 'header_textcolor', 'header_image', |
| 939 | * and so on depending on the theme options. |
| 940 | * |
| 941 | * @since 3.9.0 |
| 942 | * |
| 943 | * @param string $value The new value of the theme mod. |
| 944 | * @param string $old_value The current value of the theme mod. |
| 945 | */ |
| 946 | $mods[ $name ] = apply_filters( "pre_set_theme_mod_{$name}", $value, $old_value ); |
| 947 | |
| 948 | $theme = get_option( 'stylesheet' ); |
| 949 | update_option( "theme_mods_$theme", $mods ); |
| 950 | } |
| 951 | |
| 952 | /** |
| 953 | * Remove theme modification name from current theme list. |
| 954 | * |
| 955 | * If removing the name also removes all elements, then the entire option will |