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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 |
|---|---|
| 727 | * |
| 728 | * The dynamic portion of the hook name, `$transient`, refers to the transient name. |
| 729 | * |
| 730 | * @since 2.8.0 |
| 731 | * @since 4.4.0 The `$transient` parameter was added |
| 732 | * |
| 733 | * @param mixed $value Value of transient. |
| 734 | * @param string $transient Transient name. |
| 735 | */ |
| 736 | return apply_filters( "transient_{$transient}", $value, $transient ); |
| 737 | } |
| 738 | |
| 739 | /** |
| 740 | * Set/update the value of a transient. |
| 741 | * |
| 742 | * You do not need to serialize values. If the value needs to be serialized, then |
| 743 | * it will be serialized before it is set. |
| 744 | * |
| 745 | * @since 2.8.0 |