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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 |
|---|---|
| 457 | $value = false; |
| 458 | } |
| 459 | } |
| 460 | } |
| 461 | |
| 462 | if ( ! isset( $value ) ) |
| 463 | $value = get_option( $transient_option ); |
| 464 | } |
| 465 | |
| 466 | return apply_filters( 'transient_' . $transient, $value ); |
| 467 | } |
| 468 | |
| 469 | /** |
| 470 | * Set/update the value of a transient. |
| 471 | * |
| 472 | * You do not need to serialize values. If the value needs to be serialized, then |
| 473 | * it will be serialized before it is set. |
| 474 | * |
| 475 | * @since 2.8.0 |