I am trying to switch from mysql to PostgreSQL and am having trouble connecting. This is the code I am using:

// set up DB

$db_conf = array();
$db_conf["type"] = "postgres"; // mysql,oci8(for oracle),mssql,postgres,sybase
$db_conf["server"] = "localhost";
$db_conf["user"] = "postgres";
$db_conf["password"] = "";
$db_conf["database"] = "SSIM";

include("inc/jqgrid_dist.php");
$g = new jqgrid($db_conf);

echo "THERE";

// Set grid parameters
$grid["caption"] = "Tenants";
$grid["multiselect"] = false;
$grid["rowNum"] = "10000";
$grid["shrinkToFit"] = true;
$grid["width"] = "1100";
$grid["height"] = "250";
// No stuff in the footer
$grid["pgbuttons"] = false;
$grid["pgtext"] = null;
$grid["pgtext"] = null;
$grid["viewrecords"] = false;
$grid["rowList"] = array();
$grid["resizable"] = true; // defaults to false

I do not get past the line $g = new jqgrid($db_conf);

I have connected to the PostgreSQL database using the connection:

$conn_string = "host=localhost dbname=SSIM user=postgres password='' ";

I am using version 1.4.6.