Hello Reader's, If you want to make folder zip functionality through website then PHP give you to do this. PHP uses  ZipArchive() to create the zip files from the destination path provided. So lets get started working creating a zip folder. It's code will go like this:-

<?php
    $directory = "send_sms/";
    //create zip object
    $zip = new ZipArchive();
    $zip_name = time().".send_sms";
    $zip->open($zip_name,  ZipArchive::CREATE);
    $files = new RecursiveIteratorIterator(
        new RecursiveDirectoryIterator($directory),
        RecursiveIteratorIterator::LEAVES_ONLY
    );
    foreach ($files as $file) {
        $path = $file->getRealPath();
        //check file permission
        if(fileperms($path)!="16895"){
            $zip->addFromString(basename($path),  file_get_contents($path)) ;
            echo "<span style='color:green;'>{$path} is added to zip file.<br /></span> " ;
        }
        else{
            echo"<span style='color:red;'>{$path} location could not be added to zip<br /></span>";
        }
    }
    $zip->close();
    ?>

In the code above you can see the $directory is assigned with "send_sms/" path. This is the folder name which is in same destination with name "send_sms". All the various files inside it will be auto zipped to a new folder in this same directory. 
Now second we will delete folder using PHP. It's code will go like this:-

$file = "test.txt";
if (!unlink($file))
{ echo "Folder is deleted successfully";
}else{ echo "Folder is not deleted";
}

In the code above you just have to put file path and name in $fle var. Then unlink function will delete this file. And the output of this is show in the screenshots below