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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 |
|---|---|
| 388 | $sitename = strtolower( $_SERVER['SERVER_NAME'] ); |
| 389 | if ( substr( $sitename, 0, 4 ) == 'www.' ) { |
| 390 | $sitename = substr( $sitename, 4 ); |
| 391 | } |
| 392 | |
| 393 | $from_email = 'wordpress@' . $sitename; |
| 394 | } |
| 395 | |
| 396 | // Plugin authors can override the potentially troublesome default |
| 397 | $phpmailer->From = apply_filters( 'wp_mail_from' , $from_email ); |
| 398 | $phpmailer->FromName = apply_filters( 'wp_mail_from_name', $from_name ); |
| 399 | |
| 400 | // Set destination addresses |
| 401 | if ( !is_array( $to ) ) |
| 402 | $to = explode( ',', $to ); |
| 403 | |
| 404 | foreach ( (array) $to as $recipient ) { |
| 405 | try { |
| 406 | // Break $recipient into name and address parts if in the format "Foo <bar@baz.com>" |