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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 |
---|---|
2792 | * Filters whether to send the network admin email change notification email. |
2793 | * |
2794 | * @since 4.9.0 |
2795 | * |
2796 | * @param bool $send Whether to send the email notification. |
2797 | * @param string $old_email The old network admin email address. |
2798 | * @param string $new_email The new network admin email address. |
2799 | * @param int $network_id ID of the network. |
2800 | */ |
2801 | $send = apply_filters( 'send_network_admin_email_change_email', $send, $old_email, $new_email, $network_id ); |
2802 |
|
2803 | if ( ! $send ) { |
2804 | return; |
2805 | } |
2806 |
|
2807 | /* translators: Do not translate OLD_EMAIL, NEW_EMAIL, SITENAME, SITEURL: those are placeholders. */ |
2808 | $email_change_text = __( |
2809 | 'Hi, |
2810 |
|