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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 |
|---|---|
| 1819 | * notified of the same new version, we won't repeatedly email the administrator. |
| 1820 | * |
| 1821 | * This filter is also used on about.php to check if a plugin has disabled these notifications. |
| 1822 | * |
| 1823 | * @since 3.7.0 |
| 1824 | * |
| 1825 | * @param bool $notify Whether the site administrator is notified. |
| 1826 | * @param object $item The update offer. |
| 1827 | */ |
| 1828 | if ( ! apply_filters( 'send_core_update_notification_email', $notify, $item ) ) |
| 1829 | return false; |
| 1830 | |
| 1831 | $this->send_email( 'manual', $item ); |
| 1832 | return true; |
| 1833 | } |
| 1834 | |
| 1835 | /** |
| 1836 | * Update an item, if appropriate. |
| 1837 | * |