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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 |
|---|---|
| 5385 | */ |
| 5386 | function wp_delete_file( $file ) { |
| 5387 | /** |
| 5388 | * Filters the path of the file to delete. |
| 5389 | * |
| 5390 | * @since 2.1.0 |
| 5391 | * |
| 5392 | * @param string $medium Path to the file to delete. |
| 5393 | */ |
| 5394 | $delete = apply_filters( 'wp_delete_file', $file ); |
| 5395 | if ( ! empty( $delete ) ) { |
| 5396 | @unlink( $delete ); |
| 5397 | } |
| 5398 | } |
| 5399 | |
| 5400 | /** |
| 5401 | * Outputs a small JS snippet on preview tabs/windows to remove `window.name` on unload. |
| 5402 | * |
| 5403 | * This prevents reusing the same tab for a preview when the user has navigated away. |