Get latest Wordpress archive to server and extract files

makewp.php

<?php
   // Function to remove folders and files 
    function rrmdir($dir) {
        if (is_dir($dir)) {
            $files = scandir($dir);
            foreach ($files as $file)
                if ($file != "." && $file != "..") rrmdir("$dir/$file");
            rmdir($dir);
        }
        else if (file_exists($dir)) unlink($dir);
    }

    // function used to copy full directory structure from source to target
	function full_copy( $source, $target ) {
		if ( is_dir( $source ) )
		{
		mkdir( $target, 0777 );
		$d = dir( $source );

		while ( FALSE !== ( $entry = $d->read() ) )
		{
			if ( $entry == '.' || $entry == '..' )
			{
			continue;
			}

			$Entry = $source . '/' . $entry;           
			if ( is_dir( $Entry ) )
			{
			full_copy( $Entry, $target . '/' . $entry );
			continue;
			}
			copy( $Entry, $target . '/' . $entry );
		}

		$d->close();

		}else
		{
		copy( $source, $target );
		}
	}

// -----------------------------------------------------------


	header( 'Content-type: text/plain;charset=utf8' );
	
	$wp_url = 'https://wordpress.org/latest.zip';
	$wp_zip_file = basename( $wp_url );
	$wp_dir = __DIR__ . '/';
	
	// Download wp zip archive
	if( ! copy( $wp_url, $wp_zip_file ) ){
		die( 'Error: Can\'t get wp install file' );
	}
	
	// Unzip wp archive
	$zip = new ZipArchive;
	if ( $zip->open( $wp_zip_file ) === TRUE ) {
		$zip->extractTo( $wp_dir );
		$zip->close();
		echo 'WP archive extract to ' . $wp_dir . PHP_EOL;
	} else {
		die( 'Error: Can\'t extract wp archive file' );
	}
	
	full_copy( $wp_dir . 'wordpress', $wp_dir );
	rrmdir( $wp_dir . 'wordpress' );
	unlink( $wp_zip_file );
	
?>