unzip_file not working with the remote file

Question

unzip_file not working with the remote file

Alexander

2022年5月16日 13:15

I'm trying to use unzip_file to extract the remote archive with no success. It works only with the local path using get_template_directory() but with a remote zip archive URL I'm getting Incompatible Archive. message.

Here is the stripped version of my code:

WP_Filesystem();
global $wp_filesystem;

$source = 'http://downloads.wordpress.org/theme/ona-creative.1.0.0.zip';
$unzipfile = unzip_file( $source, get_theme_root() );

if ( is_wp_error( $unzipfile ) ) {
    wp_send_json(
        array(
            'done'    = 1,
            'message' = esc_html__( $unzipfile-get_error_message() . ' There was an error unzipping the file.', 'ona' )
        )
    ); 
}

Topic wp-filesystem ziparchive Wordpress

Category Web

Tom J Nowell · Accepted Answer · 2022年5月16日 13:15

You should use the built in APIs instead, e.g. here is a snippet from the AJAX handler for the theme admin screen:

    require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
    include_once ABSPATH . 'wp-admin/includes/theme.php';
 
    $api = themes_api(
        'theme_information',
        array(
            'slug'   => $slug,
            'fields' => array( 'sections' => false ),
        )
    );
 
    if ( is_wp_error( $api ) ) {
        $status['errorMessage'] = $api->get_error_message();
        wp_send_json_error( $status );
    }
 
    $skin     = new WP_Ajax_Upgrader_Skin();
    $upgrader = new Theme_Upgrader( $skin );
    $result   = $upgrader->install( $api->download_link );

https://developer.wordpress.org/reference/functions/wp_ajax_install_theme/

$slug was the slug of the theme, e.g. ona-creative, you don't have to download and unzip the theme yourself, let WP do the heavy lifting for you.

Alexander · Accepted Answer · 2022年5月16日 12:21

As @Buttered_Toast and @Sébastien Serre mentioned I first need to save file to a local directory before unzipping. So here is my final code:

$source = 'http://downloads.wordpress.org/theme/ona-creative.1.0.0.zip';
$file = get_theme_root() . '/' . $slug . '.zip';
file_put_contents( $file, file_get_contents( $source ));
$unzipfile = unzip_file( $file, get_theme_root() );

unzip_file not working with the remote file

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