Download exteranls scripts

download_external.php

<?php

function download_file( $file_url, $save_to ) {
	$content = file_get_contents( $file_url );
	file_put_contents( $save_to, $content );
}

if ( ! wp_next_scheduled( 'download_external_scripts_cron_hook' ) ) {
    wp_schedule_event( time(), 'daily', 'download_external_scripts_cron_hook' );
}
add_action( 'download_external_scripts_cron_hook', 'download_external_scripts_cron_exec' );
function download_external_scripts_cron_exec() {
	$extranals = array(
		'devicepx' => 'https://s0.wp.com/wp-content/js/devicepx-jetpack.js',
		'googleanalytics-platform-sharethis' => 'https://platform-api.sharethis.com/js/sharethis.js',
		'grofiles-cards' => 'https://secure.gravatar.com/js/gprofiles.js'
	);
	$local_exterbals = [];
	foreach ($extranals as $name => $url) {
		$local_exterbals[$key] = pathinfo($url, PATHINFO_BASENAME);
	}
	$save_to_path = __DIR__ . '/scripts';
	if( !is_dir($save_to_path) ) mkdir($save_to_path);
	foreach ($extranals as $name => $url) {
		$filename = pathinfo($url, PATHINFO_BASENAME);
		download_file( $url, __DIR__ . '/scripts/' . $filename );
	}
}