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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.
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465 | * Should be a date in the `YYYY-MM-DD HH:MM:SS` format. |
466 | * @type string $package The ZIP location containing the translation update. |
467 | * @type string $autoupdate Whether the translation should be automatically installed. |
468 | * } |
469 | * } |
470 | * @param array $plugin_data Plugin headers. |
471 | * @param string $plugin_file Plugin filename. |
472 | * @param array $locales Installed locales to look translations for. |
473 | */ |
474 | $update = apply_filters( "update_plugins_{$hostname}", false, $plugin_data, $plugin_file, $locales ); |
475 |
|
476 | if ( ! $update ) { |
477 | continue; |
478 | } |
479 |
|
480 | $update = (object) $update; |
481 |
|
482 | // Is it valid? We require at least a version. |
483 | if ( ! isset( $update->version ) ) { |