Обсуждение: pg_fetch_object

I'm using PHP 5.0.4, PostgreSQL 8.0.2.

Docs say (http://www.php.net/manual/en/function.pg-fetch-object.php):

object pg_fetch_object ( resource result [, int row [, string
class_name [, array params]]] )

pg_fetch_object() returns an object with properties that correspond
to the fetched row's field names. It can optionally instantiate an
object of a specific class, and pass parameters to that class's
constructor.

I'm passing a class name string as the third parameter, but I only
get back a stdClass object. I also added an array of params as the
4th parameter to pass to the constructor, but it does not appear to
be called.

Has anyone successfully used this to create a class other than stdClass?

Thanks,


John DeSoi, Ph.D.
http://pgedit.com/
Power Tools for PostgreSQL

On Fri, Sep 23, 2005 at 08:55:44PM -0400, John DeSoi wrote:
> pg_fetch_object() returns an object with properties that correspond
> to the fetched row's field names. It can optionally instantiate an
> object of a specific class, and pass parameters to that class's
> constructor.
>
> I'm passing a class name string as the third parameter, but I only
> get back a stdClass object. I also added an array of params as the
> 4th parameter to pass to the constructor, but it does not appear to
> be called.
>
> Has anyone successfully used this to create a class other than stdClass?

Works here with PHP 5.0.4 and PostgreSQL 8.0.3:

    class Foo {
        function Foo($arg) {
            print "DEBUG: Foo($arg)\n";
        }
    }

    pg_connect("dbname=test user=test password=test");

    $result = pg_query("SELECT 'foo' AS val");
    $obj = pg_fetch_object($result, 0, 'Foo', array("test"));
    var_dump($obj);

    pg_close();

The above code produces the following output:

    DEBUG: Foo(test)
    object(Foo)#1 (1) {
      ["val"]=>
      string(3) "foo"
    }

Could you post a minimal example that doesn't work?

--
Michael Fuhr

Hi Michael,

On Sep 23, 2005, at 10:44 PM, Michael Fuhr wrote:

> Works here with PHP 5.0.4 and PostgreSQL 8.0.3:

Thanks for the example, it helped me figure out my dumb mistake. I
copied code from another place using a PHP abstraction library. I was
calling 'db_fetch_object' not 'pg_fetch_object'.

Thanks much,



John DeSoi, Ph.D.
http://pgedit.com/
Power Tools for PostgreSQL