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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 |
|---|---|
| 696 | * |
| 697 | * The dynamic portion of the hook name, `$transient`, refers to the transient name. |
| 698 | * |
| 699 | * @since 2.8.0 |
| 700 | * @since 4.4.0 The `$transient` parameter was added |
| 701 | * |
| 702 | * @param mixed $value Value of transient. |
| 703 | * @param string $transient Transient name. |
| 704 | */ |
| 705 | return apply_filters( "transient_{$transient}", $value, $transient ); |
| 706 | } |
| 707 | |
| 708 | /** |
| 709 | * Set/update the value of a transient. |
| 710 | * |
| 711 | * You do not need to serialize values. If the value needs to be serialized, then |
| 712 | * it will be serialized before it is set. |
| 713 | * |
| 714 | * @since 2.8.0 |