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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 |
|---|---|
| 8045 | /** |
| 8046 | * Filters whether to send the site admin email change notification email. |
| 8047 | * |
| 8048 | * @since 4.9.0 |
| 8049 | * |
| 8050 | * @param bool $send Whether to send the email notification. |
| 8051 | * @param string $old_email The old site admin email address. |
| 8052 | * @param string $new_email The new site admin email address. |
| 8053 | */ |
| 8054 | $send = apply_filters( 'send_site_admin_email_change_email', $send, $old_email, $new_email ); |
| 8055 | |
| 8056 | if ( ! $send ) { |
| 8057 | return; |
| 8058 | } |
| 8059 | |
| 8060 | /* translators: Do not translate OLD_EMAIL, NEW_EMAIL, SITENAME, SITEURL: those are placeholders. */ |
| 8061 | $email_change_text = __( |
| 8062 | 'Hi, |
| 8063 | |