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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 |
|---|---|
| 225 | /** |
| 226 | * Filters the list of file types allowed for editing in the plugin editor. |
| 227 | * |
| 228 | * @since 2.8.0 |
| 229 | * @since 4.9.0 Added the `$plugin` parameter. |
| 230 | * |
| 231 | * @param string[] $default_types An array of editable plugin file extensions. |
| 232 | * @param string $plugin Path to the plugin file relative to the plugins directory. |
| 233 | */ |
| 234 | $file_types = (array) apply_filters( 'editable_extensions', $default_types, $plugin ); |
| 235 | |
| 236 | return $file_types; |
| 237 | } |
| 238 | |
| 239 | /** |
| 240 | * Gets the list of file extensions that are editable for a given theme. |
| 241 | * |
| 242 | * @since 4.9.0 |
| 243 | * |