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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 |
|---|---|
| 159 | $allowed_options['privacy'] = array(); |
| 160 | |
| 161 | /** |
| 162 | * Filters whether the post-by-email functionality is enabled. |
| 163 | * |
| 164 | * @since 3.0.0 |
| 165 | * |
| 166 | * @param bool $enabled Whether post-by-email configuration is enabled. Default true. |
| 167 | */ |
| 168 | if ( apply_filters( 'enable_post_by_email_configuration', true ) ) { |
| 169 | $allowed_options['writing'][] = 'mailserver_url'; |
| 170 | $allowed_options['writing'][] = 'mailserver_port'; |
| 171 | $allowed_options['writing'][] = 'mailserver_login'; |
| 172 | $allowed_options['writing'][] = 'mailserver_pass'; |
| 173 | } |
| 174 | |
| 175 | if ( ! is_utf8_charset() ) { |
| 176 | $allowed_options['reading'][] = 'blog_charset'; |
| 177 | } |