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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 |
|---|---|
| 961 | * You can use the 'validate_current_theme' filter to return FALSE to |
| 962 | * disable this functionality. |
| 963 | * |
| 964 | * @since 1.5.0 |
| 965 | * |
| 966 | * @return bool |
| 967 | */ |
| 968 | function validate_current_theme() { |
| 969 | // Don't validate during an install/upgrade. |
| 970 | if ( defined('WP_INSTALLING') || !apply_filters( 'validate_current_theme', true ) ) |
| 971 | return true; |
| 972 | |
| 973 | if ( get_template() != 'default' && !file_exists(get_template_directory() . '/index.php') ) { |
| 974 | switch_theme('default', 'default'); |
| 975 | return false; |
| 976 | } |
| 977 | |
| 978 | if ( get_stylesheet() != 'default' && !file_exists(get_template_directory() . '/style.css') ) { |
| 979 | switch_theme('default', 'default'); |