Unzip php file

unzip_download.php

<?php

set_time_limit(0);

function unzipFile( $file, $dir = null ) {
    if ( is_null( $dir ) ) {
        $dir = dirname( __FILE__ );
    }

    $dir = $dir . DIRECTORY_SEPARATOR . 'unzipped';
    if ( ! file_exists( $dir ) ) {
        mkdir( $dir, 0777, true );
    }

    $zip = new ZipArchive;
    $res = $zip->open( $file );
    if ( $res === true ) {
        $zip->extractTo( $dir );
        $zip->close();

        return true;
    } else {
        return false;
    }

}

function downloadFile( $url, $dir_path ) {
    $newfname = rtrim( $dir_path, '/' ) . DIRECTORY_NAME . pathinfo( $url, PATHINFO_BASENAME );
    $file     = fopen( $url, 'rb' );
    if ( $file ) {
        $newf = fopen( $newfname, 'wb' );
        if ( $newf ) {
            while ( ! feof( $file ) ) {
                fwrite( $newf, fread( $file, 1024 * 8 ), 1024 * 8 );
            }
        }
    }

    if ( $file ) {
        fclose( $file );
    }
    if ( $newf ) {
        fclose( $newf );
    }

    return true;
}

$url = 'https://sardofoodsb2b.dev.ideowp.com/sf.zip';
$dir = dirname(__FILE__);
if ( downloadFile( $url, $dir ) ) {
    echo 'DOWNLOADED' . '<br/>';
    if(unzipFile( pathinfo( $url, PATHINFO_BASENAME ), $dir ) ) {
        echo 'UNZIPPED' . '<br/>';
    }
}