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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 |
|---|---|
| 3966 | * |
| 3967 | * @type WP_User_Request $request User request object. |
| 3968 | * @type string $email The email address this is being sent to. |
| 3969 | * @type string $description Description of the action being performed so the user knows what the email is for. |
| 3970 | * @type string $confirm_url The link to click on to confirm the account action. |
| 3971 | * @type string $sitename The site name sending the mail. |
| 3972 | * @type string $siteurl The site URL sending the mail. |
| 3973 | * } |
| 3974 | */ |
| 3975 | $subject = apply_filters( 'user_request_action_email_subject', $subject, $email_data['sitename'], $email_data ); |
| 3976 | |
| 3977 | $headers = ''; |
| 3978 | |
| 3979 | /** |
| 3980 | * Filters the headers of the email sent when an account action is attempted. |
| 3981 | * |
| 3982 | * @since 5.4.0 |
| 3983 | * |
| 3984 | * @param string|array $headers The email headers. |