Intel/Linux 2.0.37 libc 5.4.33
gcc version 2.7.2p 970821 (egcs-970821)
PostgresSQL 6.5
PHP 3.0.11 compiled as Apache module
Apache 1.3.6

/usr/src/php-3.0.11# ./configure --with-apache=../apache_1.3.6 --enable-track-vars --with-pgsql --with-zlib

Apache 1.3.4 compiled with PHP 3.0.6, same environment (same pgsql and database, same php3.ini, same script) works.

$result1=pg_exec($conn,"select topic,count(*) as count from \"msgboard messages\" where expired<>'t' group by topic;");
$rows=pg_numrows($result1);
for($row=0;$row<$rows;$row++) {
        $obj=pg_fetch_array($result1,$row); // here it happens
        //$darab[$obj[topic]]=$obj[count];
}

I apologize for the lack of a backtrace, but my efforts to generate a core file by following the instructions remained fruitless.

Regards,
Andras