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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 |
|---|---|
| 1033 | * |
| 1034 | * @since 3.9.0 |
| 1035 | * @since 4.4.0 Converted to allow complete control over the `$page_templates` array. |
| 1036 | * |
| 1037 | * @param array $page_templates Array of page templates. Keys are filenames, |
| 1038 | * values are translated names. |
| 1039 | * @param WP_Theme $this The theme object. |
| 1040 | * @param WP_Post|null $post The post being edited, provided for context, or null. |
| 1041 | */ |
| 1042 | return (array) apply_filters( 'theme_page_templates', $page_templates, $this, $post ); |
| 1043 | } |
| 1044 | |
| 1045 | /** |
| 1046 | * Scans a directory for files of a certain extension. |
| 1047 | * |
| 1048 | * @since 3.4.0 |
| 1049 | * |
| 1050 | * @static |
| 1051 | * @access private |