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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 |
|---|---|
| 172 | $ttl = (int) $body['ttl']; |
| 173 | if ( $ttl && ( time() + $ttl < wp_next_scheduled( 'wp_version_check' ) ) ) { |
| 174 | // Queue an event to re-run the update check in $ttl seconds. |
| 175 | wp_schedule_single_event( time() + $ttl, 'wp_version_check' ); |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | // Trigger background updates if running non-interactively, and we weren't called from the update handler. |
| 180 | if ( defined( 'DOING_CRON' ) && DOING_CRON && ! doing_action( 'wp_maybe_auto_update' ) ) { |
| 181 | do_action( 'wp_maybe_auto_update' ); |
| 182 | } |
| 183 | } |
| 184 | |
| 185 | /** |
| 186 | * Check plugin versions against the latest versions hosted on WordPress.org. |
| 187 | * |
| 188 | * The WordPress version, PHP version, and Locale is sent along with a list of |
| 189 | * all plugins installed. Checks against the WordPress server at |
| 190 | * api.wordpress.org. Will only check if WordPress isn't installing. |