postgreSQL连接数据库

<?php
// 连接，选择数据库
$db = pg_connect("host=localhost dbname=publishing user=www password=foo");
    or die('Could not connect: ' . pg_last_error());

// 执行 SQL 查询
$query = 'SELECT * FROM authors';
$result = pg_query($query) or die('Query failed: ' . pg_last_error());

// 用 HTML 显示结果
echo "<table>\n";
while ($line = pg_fetch_array($result, null, PGSQL_ASSOC)) {
    echo "\t<tr>\n";
    foreach ($line as $col_value) {
        echo "\t\t<td>$col_value</td>\n";
    }
    echo "\t</tr>\n";
}
echo "</table>\n";

// 释放结果集
pg_free_result($result);

// 关闭连接
pg_close($link);
?>