Use authentication with the JSON REST API

JSON REST API Basic Authentication

//Note: requires the Basic Auth plugin

$username = 'username';
$password = 'password';
$args = array(
	'headers' => array(
		'Authorization' => 'Basic ' . base64_encode( $username . ':' . $password ),
	),
);
$queryFilters = array(
	'posts_per_page'=>-1,
	's'=>'search query',
	'tax_query' => array(
		array(
			'field'=>'slug',
			'taxonomy'=>'designation',
			'terms'=>array('staff','student','alumni')
		)
	)
);

$query = '?';
foreach($queryFilters as $key => $value):
	$query .= "filter[$key]=".maybe_serialize($value)."&";
endforeach;

echo '<pre>';
	print_r($query);
echo '</pre>';

$employees = wp_remote_get(get_json_url().'/posts/'.$query, $args);

echo '<pre>';
print_r(json_decode($employees['body']));
echo '</pre>';