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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 |
|---|---|
| 1060 | * |
| 1061 | * The dynamic portion of the hook name, `$name`, refers to the key name |
| 1062 | * of the modification array. For example, 'header_textcolor', 'header_image', |
| 1063 | * and so on depending on the theme options. |
| 1064 | * |
| 1065 | * @since 2.2.0 |
| 1066 | * |
| 1067 | * @param mixed $current_mod The value of the active theme modification. |
| 1068 | */ |
| 1069 | return apply_filters( "theme_mod_{$name}", $mods[ $name ] ); |
| 1070 | } |
| 1071 | |
| 1072 | if ( is_string( $default_value ) ) { |
| 1073 | // Only run the replacement if an sprintf() string format pattern was found. |
| 1074 | if ( preg_match( '#(?<!%)%(?:\d+\$?)?s#', $default_value ) ) { |
| 1075 | // Remove a single trailing percent sign. |
| 1076 | $default_value = preg_replace( '#(?<!%)%$#', '', $default_value ); |
| 1077 | $default_value = sprintf( $default_value, get_template_directory_uri(), get_stylesheet_directory_uri() ); |
| 1078 | } |
| 1079 | } |
| 1080 | |
| 1081 | /** This filter is documented in wp-includes/theme.php */ |
| 1082 | return apply_filters( "theme_mod_{$name}", $default_value ); |
| 1083 | } |
| 1084 | |
| 1085 | /** |
| 1086 | * Updates theme modification value for the active theme. |
| 1087 | * |
| 1088 | * @since 2.1.0 |
| 1089 | * @since 5.6.0 A return value was added. |
| 1090 | * |
| 1091 | * @param string $name Theme modification name. |