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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 |
|---|---|
| 1354 | /** |
| 1355 | * Filter the value of an existing site transient. |
| 1356 | * |
| 1357 | * The dynamic portion of the hook name, `$transient`, refers to the transient name. |
| 1358 | * |
| 1359 | * @since 2.9.0 |
| 1360 | * |
| 1361 | * @param mixed $value Value of site transient. |
| 1362 | */ |
| 1363 | return apply_filters( 'site_transient_' . $transient, $value ); |
| 1364 | } |
| 1365 | |
| 1366 | /** |
| 1367 | * Set/update the value of a site transient. |
| 1368 | * |
| 1369 | * You do not need to serialize values, if the value needs to be serialize, then |
| 1370 | * it will be serialized before it is set. |
| 1371 | * |
| 1372 | * @since 2.9.0 |