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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 |
|---|---|
| 6668 | */ |
| 6669 | function wp_delete_file( $file ) { |
| 6670 | /** |
| 6671 | * Filters the path of the file to delete. |
| 6672 | * |
| 6673 | * @since 2.1.0 |
| 6674 | * |
| 6675 | * @param string $file Path to the file to delete. |
| 6676 | */ |
| 6677 | $delete = apply_filters( 'wp_delete_file', $file ); |
| 6678 | if ( ! empty( $delete ) ) { |
| 6679 | @unlink( $delete ); |
| 6680 | } |
| 6681 | } |
| 6682 | |
| 6683 | /** |
| 6684 | * Deletes a file if its path is within the given directory. |
| 6685 | * |
| 6686 | * @since 4.9.7 |