Thread: Problem with PHP and PostgreSQL

Problem with PHP and PostgreSQL

From

"Seader, Cameron"

Date:

04 February 2004, 19:20:21

I am having trouble with the following loops and such and accessing PostgreSQL database.
The errors i get are:

Warning: pg_num_fields(): supplied argument is not a valid PostgreSQL result resource in
/var/www/html/PMS/csv_export.phpon line 108 

Warning: pg_fetch_row(): supplied argument is not a valid PostgreSQL result resource in
/var/www/html/PMS/csv_export.phpon line 118 

Here is my Code Below:
//**** SQL Query
$query_panels = sprintf("SELECT * FROM %s WHERE utctime AT TIME ZONE 'MST' BETWEEN '%s' AND '%s' ORDER BY utctime %s",
$MM_param1__panels,$MM_param2__panels,$MM_param3__panels,$MM_param4__panels);
//**** Count Fields
$fieldcounts = pg_num_fields($query_panels);
//**** List fields as first Row
for($i = 0; $i < $fieldcounts; $i++)
 {
     $fieldtype = pg_fieldtype($query_panels, $i);
    echo "$fieldtype->name";
    if ($i < ($fieldcounts-1))
    echo ","; else echo "\n";
 }
//**** Output each row of Data
while ($myrow = pg_fetch_row($query_panels))
    {
        for($i = 0; $i < $fieldcounts; $i++)
        {
            $fieldname = pg_fieldname($query_panels, $i);
            if ($i < ($fieldcounts-1)) echo $myrow[$fieldname] . ", ";
            else echo $myrow[$fieldname] . "\n";
        }
    }

Why do i get those errors?
Why is it not a valid result resource?
any help would be awsome.
Thanks,

Cameron Seader
mailto:CSeader@Idahopower.com
1.208.388.2582 Office



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Re: Problem with PHP and PostgreSQL

From

"scott.marlowe"

Date:

04 February 2004, 20:15:20

On Wed, 4 Feb 2004, Seader, Cameron wrote:

> I am having trouble with the following loops and such and accessing PostgreSQL database.
> The errors i get are:
>
> Warning: pg_num_fields(): supplied argument is not a valid PostgreSQL result resource in
/var/www/html/PMS/csv_export.phpon line 108 
>
> Warning: pg_fetch_row(): supplied argument is not a valid PostgreSQL result resource in
/var/www/html/PMS/csv_export.phpon line 118 
>
> Here is my Code Below:
> //**** SQL Query
> $query_panels = sprintf("SELECT * FROM %s WHERE utctime AT TIME ZONE 'MST' BETWEEN '%s' AND '%s' ORDER BY utctime
%s",$MM_param1__panels,$MM_param2__panels,$MM_param3__panels,$MM_param4__panels); 
> //**** Count Fields
> $fieldcounts = pg_num_fields($query_panels);
> //**** List fields as first Row

You need to connect to the database and execute your query:

$conn = pg_connect("dbname=bigdb host=myserver user=me2");
$query_panels = sprintf("SELECT...  ;
$res = pg_query($conn,$query_panels);
$fieldcount = pg_num_fields($res);

etc...

Re: Problem with PHP and PostgreSQL

From

"Seader, Cameron"

Date:

04 February 2004, 20:17:09

i did i just did not include that part of the code. sorry

-----Original Message-----
From: scott.marlowe [mailto:scott.marlowe@ihs.com]
Sent: Wednesday, February 04, 2004 2:09 PM
To: Seader, Cameron
Cc: pgsql-php@postgresql.org
Subject: Re: [PHP] Problem with PHP and PostgreSQL

On Wed, 4 Feb 2004, Seader, Cameron wrote:

> I am having trouble with the following loops and such and accessing PostgreSQL database.
> The errors i get are:
>
> Warning: pg_num_fields(): supplied argument is not a valid PostgreSQL result resource in
/var/www/html/PMS/csv_export.phpon line 108 
>
> Warning: pg_fetch_row(): supplied argument is not a valid PostgreSQL result resource in
/var/www/html/PMS/csv_export.phpon line 118 
>
> Here is my Code Below:
> //**** SQL Query
> $query_panels = sprintf("SELECT * FROM %s WHERE utctime AT TIME ZONE 'MST' BETWEEN '%s' AND '%s' ORDER BY utctime
%s",$MM_param1__panels,$MM_param2__panels,$MM_param3__panels,$MM_param4__panels); 
> //**** Count Fields
> $fieldcounts = pg_num_fields($query_panels);
> //**** List fields as first Row

You need to connect to the database and execute your query:

$conn = pg_connect("dbname=bigdb host=myserver user=me2");
$query_panels = sprintf("SELECT...  ;
$res = pg_query($conn,$query_panels);
$fieldcount = pg_num_fields($res);

etc...

[INFO] -- Access Manager:
This transmission may contain information that is privileged, confidential and/or exempt from disclosure under
applicablelaw.  If you are not the intended recipient, you are hereby notified that any disclosure, copying,
distribution,or use of the information contained herein (including any reliance thereon) is STRICTLY PROHIBITED. If you
receivedthis transmission in error, please immediately contact the sender and destroy the material in its entirety,
whetherin electronic or hard copy format.  Thank you.   A2

Re: Problem with PHP and PostgreSQL

From

"scott.marlowe"

Date:

04 February 2004, 20:24:48

But were you pointing at the result handle or the query string when you
ran pg_num_fields?

This won't work:

$conn = pg_connect("dbname=bigdb host=myserver user=me2");
$query_panels = sprintf("SELECT...  ;
$res = pg_query($conn,$query_panels);
$fieldcount = pg_num_fields($query_panels);  <-- Notice I put the query
there, not the result handle...

On Wed, 4 Feb 2004, Seader, Cameron wrote:

> i did i just did not include that part of the code. sorry
>
> -----Original Message-----
> From: scott.marlowe [mailto:scott.marlowe@ihs.com]
> Sent: Wednesday, February 04, 2004 2:09 PM
> To: Seader, Cameron
> Cc: pgsql-php@postgresql.org
> Subject: Re: [PHP] Problem with PHP and PostgreSQL
>
>
> On Wed, 4 Feb 2004, Seader, Cameron wrote:
>
> > I am having trouble with the following loops and such and accessing PostgreSQL database.
> > The errors i get are:
> >
> > Warning: pg_num_fields(): supplied argument is not a valid PostgreSQL result resource in
/var/www/html/PMS/csv_export.phpon line 108 
> >
> > Warning: pg_fetch_row(): supplied argument is not a valid PostgreSQL result resource in
/var/www/html/PMS/csv_export.phpon line 118 
> >
> > Here is my Code Below:
> > //**** SQL Query
> > $query_panels = sprintf("SELECT * FROM %s WHERE utctime AT TIME ZONE 'MST' BETWEEN '%s' AND '%s' ORDER BY utctime
%s",$MM_param1__panels,$MM_param2__panels,$MM_param3__panels,$MM_param4__panels); 
> > //**** Count Fields
> > $fieldcounts = pg_num_fields($query_panels);
> > //**** List fields as first Row
>
> You need to connect to the database and execute your query:
>
> $conn = pg_connect("dbname=bigdb host=myserver user=me2");
> $query_panels = sprintf("SELECT...  ;
> $res = pg_query($conn,$query_panels);
> $fieldcount = pg_num_fields($res);
>
> etc...
>
>
>
>
> [INFO] -- Access Manager:
> This transmission may contain information that is privileged, confidential and/or exempt from disclosure under
applicablelaw.  If you are not the intended recipient, you are hereby notified that any disclosure, copying,
distribution,or use of the information contained herein (including any reliance thereon) is STRICTLY PROHIBITED. If you
receivedthis transmission in error, please immediately contact the sender and destroy the material in its entirety,
whetherin electronic or hard copy format.  Thank you.   A2 
>
>
>