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To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
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 |
|---|---|
| 2422 | * Filters the value of a specific post field before saving. |
| 2423 | * |
| 2424 | * The dynamic portion of the hook name, `$field`, refers to the post |
| 2425 | * field name. |
| 2426 | * |
| 2427 | * @since 2.3.0 |
| 2428 | * |
| 2429 | * @param mixed $value Value of the post field. |
| 2430 | */ |
| 2431 | $value = apply_filters( "pre_{$field}", $value ); |
| 2432 | |
| 2433 | /** |
| 2434 | * Filters the value of a specific field before saving. |
| 2435 | * |
| 2436 | * The dynamic portion of the hook name, `$field_no_prefix`, refers |
| 2437 | * to the post field name. |
| 2438 | * |
| 2439 | * @since 2.3.0 |
| 2440 | * |