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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 |
|---|---|
| 1478 | * for the copied data. |
| 1479 | * @type bool $private Optional. If set to `true`, the field will be excluded |
| 1480 | * from the copied data, allowing you to show, for example, |
| 1481 | * API keys here. Default false. |
| 1482 | * } |
| 1483 | * } |
| 1484 | * } |
| 1485 | * } |
| 1486 | */ |
| 1487 | $info = apply_filters( 'debug_information', $info ); |
| 1488 | |
| 1489 | return $info; |
| 1490 | } |
| 1491 | |
| 1492 | /** |
| 1493 | * Returns the value of a MySQL system variable. |
| 1494 | * |
| 1495 | * @since 5.9.0 |
| 1496 | * |