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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 |
|---|---|
| 2319 | * |
| 2320 | * The dynamic portion of the hook name, `$transient`, refers to the transient name. |
| 2321 | * |
| 2322 | * @since 2.9.0 |
| 2323 | * @since 4.4.0 The `$transient` parameter was added. |
| 2324 | * |
| 2325 | * @param mixed $value Value of site transient. |
| 2326 | * @param string $transient Transient name. |
| 2327 | */ |
| 2328 | return apply_filters( "site_transient_{$transient}", $value, $transient ); |
| 2329 | } |
| 2330 | |
| 2331 | /** |
| 2332 | * Sets/updates the value of a site transient. |
| 2333 | * |
| 2334 | * You do not need to serialize values. If the value needs to be serialized, |
| 2335 | * then it will be serialized before it is set. |
| 2336 | * |
| 2337 | * @since 2.9.0 |