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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 |
|---|---|
| 879 | * @type string $subject The email's subject. |
| 880 | * @type string $body The email message body. |
| 881 | * @type string $headers Any email headers, defaults to no headers. |
| 882 | * } |
| 883 | * @param string $type The type of email being sent. Can be one of |
| 884 | * 'success', 'fail', 'manual', 'critical'. |
| 885 | * @param object $core_update The update offer that was attempted. |
| 886 | * @param mixed $result The result for the core update. Can be WP_Error. |
| 887 | */ |
| 888 | $email = apply_filters( 'auto_core_update_email', $email, $type, $core_update, $result ); |
| 889 | |
| 890 | wp_mail( $email['to'], wp_specialchars_decode( $email['subject'] ), $email['body'], $email['headers'] ); |
| 891 | } |
| 892 | |
| 893 | |
| 894 | /** |
| 895 | * If we tried to perform plugin or theme updates, check if we should send an email. |
| 896 | * |
| 897 | * @since 5.5.0 |