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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 |
|---|---|
| 3442 | * @type string $subject The email's subject. |
| 3443 | * @type string $body The email message body. |
| 3444 | * @type string $headers Any email headers, defaults to no headers. |
| 3445 | * } |
| 3446 | * @param string $type The type of email being sent. Can be one of |
| 3447 | * 'success', 'fail', 'manual', 'critical'. |
| 3448 | * @param object $core_update The update offer that was attempted. |
| 3449 | * @param mixed $result The result for the core update. Can be WP_Error. |
| 3450 | */ |
| 3451 | $email = apply_filters( 'auto_core_update_email', $email, $type, $core_update, $result ); |
| 3452 | |
| 3453 | wp_mail( $email['to'], wp_specialchars_decode( $email['subject'] ), $email['body'], $email['headers'] ); |
| 3454 | } |
| 3455 | |
| 3456 | /** |
| 3457 | * Prepares and sends an email of a full log of background update results, useful for debugging and geekery. |
| 3458 | * |
| 3459 | * @since 3.7.0 |
| 3460 | * @access protected |