Test WordPress transient system, we had some issues on SiteGround hosting with Memcached enabled.

pronamic-transient-tester.php

<?php

define( 'WP_USE_THEMES', false );

require './wp-blog-header.php';

$test = get_site_transient( 'pronamic_transient_test' );

echo 'Get transient', '<br />';

if ( false === $test ) {
	set_site_transient( 'pronamic_transient_test', time() );

	echo 'Set transient', '<br />';
}

var_dump( $test );