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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 |
|---|---|
| 2618 | * The dynamic portion of the hook name, `$transient`, refers to the transient name. |
| 2619 | * |
| 2620 | * @since 3.0.0 |
| 2621 | * @since 4.4.0 The `$transient` parameter was added |
| 2622 | * |
| 2623 | * @param mixed $value Site transient value. |
| 2624 | * @param int $expiration Time until expiration in seconds. |
| 2625 | * @param string $transient Transient name. |
| 2626 | */ |
| 2627 | do_action( "set_site_transient_{$transient}", $value, $expiration, $transient ); |
| 2628 | |
| 2629 | /** |
| 2630 | * Fires after the value for a site transient has been set. |
| 2631 | * |
| 2632 | * @since 3.0.0 |
| 2633 | * |
| 2634 | * @param string $transient The name of the site transient. |
| 2635 | * @param mixed $value Site transient value. |
| 2636 | * @param int $expiration Time until expiration in seconds. |