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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 |
|---|---|
| 345 | $sitename = strtolower( $_SERVER['SERVER_NAME'] ); |
| 346 | if ( substr( $sitename, 0, 4 ) == 'www.' ) { |
| 347 | $sitename = substr( $sitename, 4 ); |
| 348 | } |
| 349 | |
| 350 | $from_email = 'wordpress@' . $sitename; |
| 351 | } |
| 352 | |
| 353 | // Set the from name and email |
| 354 | $phpmailer->From = apply_filters( 'wp_mail_from', $from_email ); |
| 355 | $phpmailer->FromName = apply_filters( 'wp_mail_from_name', $from_name ); |
| 356 | |
| 357 | // Set destination address |
| 358 | $phpmailer->AddAddress( $to ); |
| 359 | |
| 360 | // Set mail's subject and body |
| 361 | $phpmailer->Subject = $subject; |
| 362 | $phpmailer->Body = $message; |
| 363 | |