$result = pg_query("SELECT * FROM test");
$arr = pg_fetch_array($result);

<?php
$result = pg_query("SELECT * grom test") or die ('Ошибка доступа к базе');
?>
<table class="bordered">
  <tr>
	<th>ID</th>
	<th width="140px">Имя пользователя</th>
	<th>Группа</th>
	<th>Имя</th>
	<th>Фамилия</th>
	<th>Отчество</th>
	<th>Город</th>
  </tr>
<?php
while($row = pg_fetch_array($result)){
echo '<tr>';
echo '<td>' . $row['id'];
echo '<td>' . $row['user'];
echo '<td>' . $row['spr_group_name'];
echo '<td>' . $row['users_name'];
echo '<td>' . $row['surname'];
echo '<td>' . $row['middle_name'];
echo '<td>' . $row['city'];
echo '<td><button onclick="func_id('.$row['id'].')">TEST</button></td>';
echo '</tr>';