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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 |
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633 | * @type string $package Package for update. |
634 | * @type string $destination Update location. |
635 | * @type bool $clear_destination Clear the destination resource. |
636 | * @type bool $clear_working Clear the working resource. |
637 | * @type bool $abort_if_destination_exists Abort if the Destination directory exists. |
638 | * @type bool $is_multi Whether the upgrader is running multiple times. |
639 | * @type array $hook_extra Extra hook arguments. |
640 | * } |
641 | */ |
642 | $options = apply_filters( 'upgrader_package_options', $options ); |
643 |
|
644 | if ( ! $options['is_multi'] ) { // call $this->header separately if running multiple times |
645 | $this->skin->header(); |
646 | } |
647 |
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648 | // Connect to the Filesystem first. |
649 | $res = $this->fs_connect( array( WP_CONTENT_DIR, $options['destination'] ) ); |
650 | // Mainly for non-connected filesystem. |
651 | if ( ! $res ) { |