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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 |
|---|---|
| 1102 | * The dynamic portion of the hook name, `$name`, refers to the key name |
| 1103 | * of the modification array. For example, 'header_textcolor', 'header_image', |
| 1104 | * and so on depending on the theme options. |
| 1105 | * |
| 1106 | * @since 3.9.0 |
| 1107 | * |
| 1108 | * @param mixed $value The new value of the theme modification. |
| 1109 | * @param mixed $old_value The current value of the theme modification. |
| 1110 | */ |
| 1111 | $mods[ $name ] = apply_filters( "pre_set_theme_mod_{$name}", $value, $old_value ); |
| 1112 | |
| 1113 | $theme = get_option( 'stylesheet' ); |
| 1114 | |
| 1115 | return update_option( "theme_mods_$theme", $mods ); |
| 1116 | } |
| 1117 | |
| 1118 | /** |
| 1119 | * Removes theme modification name from active theme list. |
| 1120 | * |