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WP_Upgrader::unpack_package( string $package, bool $delete_package = true )

Unpack a compressed package file.

Description

Parameters

$package

(string) (Required) Full path to the package file.

$delete_package

(bool) (Optional) Whether to delete the package file after attempting to unpack it.

Default value: true

Return

(string|WP_Error) The path to the unpacked contents, or a WP_Error on failure.

Source

File: wp-admin/includes/class-wp-upgrader.php

public function unpack_package( $package, $delete_package = true ) {
		global $wp_filesystem;

		$this->skin->feedback( 'unpack_package' );

		$upgrade_folder = $wp_filesystem->wp_content_dir() . 'upgrade/';

		//Clean up contents of upgrade directory beforehand.
		$upgrade_files = $wp_filesystem->dirlist( $upgrade_folder );
		if ( ! empty( $upgrade_files ) ) {
			foreach ( $upgrade_files as $file ) {
				$wp_filesystem->delete( $upgrade_folder . $file['name'], true );
			}
		}

		// We need a working directory - Strip off any .tmp or .zip suffixes
		$working_dir = $upgrade_folder . basename( basename( $package, '.tmp' ), '.zip' );

		// Clean up working directory
		if ( $wp_filesystem->is_dir( $working_dir ) ) {
			$wp_filesystem->delete( $working_dir, true );
		}

		// Unzip package to working directory
		$result = unzip_file( $package, $working_dir );

		// Once extracted, delete the package if required.
		if ( $delete_package ) {
			unlink( $package );
		}

		if ( is_wp_error( $result ) ) {
			$wp_filesystem->delete( $working_dir, true );
			if ( 'incompatible_archive' == $result->get_error_code() ) {
				return new WP_Error( 'incompatible_archive', $this->strings['incompatible_archive'], $result->get_error_data() );
			}
			return $result;
		}

		return $working_dir;
	}

Changelog

Version Description
2.8.0 Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/classes/wp_upgrader/unpack_package