<?php
	$db = new PDO("pgsql:host=localhost; dbname=gmq717", "postgres", "gmq717");
	$variable = $_GET['var'];
	$sql = 'SELECT ' . $variable . ' FROM montreal_postgis';
	$query = $db->query($sql);
	while ($row = $query->fetch()) {
		echo json_encode($row);
	};
?>