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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 |
|---|---|
| 393 | $phpmailer->From = apply_filters( 'wp_mail_from', $from_email ); |
| 394 | |
| 395 | /** |
| 396 | * Filter the name to associate with the "from" email address. |
| 397 | * |
| 398 | * @since 2.3.0 |
| 399 | * |
| 400 | * @param string $from_name Name associated with the "from" email address. |
| 401 | */ |
| 402 | $phpmailer->FromName = apply_filters( 'wp_mail_from_name', $from_name ); |
| 403 | |
| 404 | // Set destination addresses |
| 405 | if ( !is_array( $to ) ) |
| 406 | $to = explode( ',', $to ); |
| 407 | |
| 408 | foreach ( (array) $to as $recipient ) { |
| 409 | try { |
| 410 | // Break $recipient into name and address parts if in the format "Foo <bar@baz.com>" |
| 411 | $recipient_name = ''; |