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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 |
|---|---|
| 198 | $ttl = (int) $body['ttl']; |
| 199 | if ( $ttl && ( time() + $ttl < wp_next_scheduled( 'wp_version_check' ) ) ) { |
| 200 | // Queue an event to re-run the update check in $ttl seconds. |
| 201 | wp_schedule_single_event( time() + $ttl, 'wp_version_check' ); |
| 202 | } |
| 203 | } |
| 204 | |
| 205 | // Trigger background updates if running non-interactively, and we weren't called from the update handler. |
| 206 | if ( $doing_cron && ! doing_action( 'wp_maybe_auto_update' ) ) { |
| 207 | do_action( 'wp_maybe_auto_update' ); |
| 208 | } |
| 209 | } |
| 210 | |
| 211 | /** |
| 212 | * Check plugin versions against the latest versions hosted on WordPress.org. |
| 213 | * |
| 214 | * The WordPress version, PHP version, and Locale is sent along with a list of |
| 215 | * all plugins installed. Checks against the WordPress server at |
| 216 | * api.wordpress.org. Will only check if WordPress isn't installing. |