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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 |
|---|---|
| 4834 | */ |
| 4835 | function wp_delete_file( $file ) { |
| 4836 | /** |
| 4837 | * Filter the path of the file to delete. |
| 4838 | * |
| 4839 | * @since 2.1.0 |
| 4840 | * |
| 4841 | * @param string $medium Path to the file to delete. |
| 4842 | */ |
| 4843 | $delete = apply_filters( 'wp_delete_file', $file ); |
| 4844 | if ( ! empty( $delete ) ) { |
| 4845 | @unlink( $delete ); |
| 4846 | } |
| 4847 | } |
| 4848 | |