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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 |
|---|---|
| 970 | * @since 1.5.0 |
| 971 | * |
| 972 | * @return string |
| 973 | */ |
| 974 | function get_single_template() { |
| 975 | global $wp_query; |
| 976 | |
| 977 | $object = $wp_query->get_queried_object(); |
| 978 | $templates = array('single-' . $object->post_type . '.php', 'single.php'); |
| 979 | return apply_filters('single_template', locate_template($templates)); |
| 980 | } |
| 981 | |
| 982 | /** |
| 983 | * Retrieve path of attachment template in current or parent template. |
| 984 | * |
| 985 | * The attachment path first checks if the first part of the mime type exists. |
| 986 | * The second check is for the second part of the mime type. The last check is |
| 987 | * for both types separated by an underscore. If neither are found then the file |
| 988 | * 'attachment.php' is checked and returned. |