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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 |
|---|---|
| 6711 | */ |
| 6712 | function wp_delete_file( $file ) { |
| 6713 | /** |
| 6714 | * Filters the path of the file to delete. |
| 6715 | * |
| 6716 | * @since 2.1.0 |
| 6717 | * |
| 6718 | * @param string $file Path to the file to delete. |
| 6719 | */ |
| 6720 | $delete = apply_filters( 'wp_delete_file', $file ); |
| 6721 | if ( ! empty( $delete ) ) { |
| 6722 | @unlink( $delete ); |
| 6723 | } |
| 6724 | } |
| 6725 | |
| 6726 | /** |
| 6727 | * Deletes a file if its path is within the given directory. |
| 6728 | * |
| 6729 | * @since 4.9.7 |