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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 |
|---|---|
| 5488 | */ |
| 5489 | function wp_delete_file( $file ) { |
| 5490 | /** |
| 5491 | * Filters the path of the file to delete. |
| 5492 | * |
| 5493 | * @since 2.1.0 |
| 5494 | * |
| 5495 | * @param string $file Path to the file to delete. |
| 5496 | */ |
| 5497 | $delete = apply_filters( 'wp_delete_file', $file ); |
| 5498 | if ( ! empty( $delete ) ) { |
| 5499 | @unlink( $delete ); |
| 5500 | } |
| 5501 | } |
| 5502 | |
| 5503 | /** |
| 5504 | * Outputs a small JS snippet on preview tabs/windows to remove `window.name` on unload. |
| 5505 | * |
| 5506 | * This prevents reusing the same tab for a preview when the user has navigated away. |