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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 |
|---|---|
| 239 | * |
| 240 | * This filter is also used on about.php to check if a plugin has disabled |
| 241 | * these notifications. |
| 242 | * |
| 243 | * @since 3.7.0 |
| 244 | * |
| 245 | * @param bool $notify Whether the site administrator is notified. |
| 246 | * @param object $item The update offer. |
| 247 | */ |
| 248 | if ( ! apply_filters( 'send_core_update_notification_email', $notify, $item ) ) { |
| 249 | return false; |
| 250 | } |
| 251 | |
| 252 | $this->send_email( 'manual', $item ); |
| 253 | return true; |
| 254 | } |
| 255 | |
| 256 | /** |
| 257 | * Update an item, if appropriate. |