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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 |
|---|---|
| 387 | } |
| 388 | |
| 389 | /** |
| 390 | * Filters the email address to send from. |
| 391 | * |
| 392 | * @since 2.2.0 |
| 393 | * |
| 394 | * @param string $from_email Email address to send from. |
| 395 | */ |
| 396 | $from_email = apply_filters( 'wp_mail_from', $from_email ); |
| 397 | |
| 398 | /** |
| 399 | * Filters the name to associate with the "from" email address. |
| 400 | * |
| 401 | * @since 2.3.0 |
| 402 | * |
| 403 | * @param string $from_name Name associated with the "from" email address. |
| 404 | */ |
| 405 | $from_name = apply_filters( 'wp_mail_from_name', $from_name ); |