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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 |
|---|---|
| 1554 | // TODO: Add key #2 with longer expiration. |
| 1555 | |
| 1556 | /** |
| 1557 | * Filters the valid signing keys used to verify the contents of files. |
| 1558 | * |
| 1559 | * @since 5.2.0 |
| 1560 | * |
| 1561 | * @param string[] $trusted_keys The trusted keys that may sign packages. |
| 1562 | */ |
| 1563 | return apply_filters( 'wp_trusted_keys', $trusted_keys ); |
| 1564 | } |
| 1565 | |
| 1566 | /** |
| 1567 | * Determines whether the given file is a valid ZIP file. |
| 1568 | * |
| 1569 | * This function does not test to ensure that a file exists. Non-existent files |
| 1570 | * are not valid ZIPs, so those will also return false. |
| 1571 | * |
| 1572 | * @since 6.4.4 |