Update of bug 5582
Seems to  be arrays problem !
It happens on the return of a function !?
Better crash with reurn of NULL values ?

An exemple for the good crash:

function toto() {
global $r;
$dd=mssql_fetch_array($r);
$dd["titi"]=$dd["riri"]+1;
$dd[0]=(($sens!=0)?"na":$dd[0]);
return $dd;
}
.....
connect to a db mssql_connect .....
.....
$qr="SELECT SUM(field2) AS field2 FROM table1";
$r=mssql_query($qr,$iddb);
for ($i=0;$i<30;$i++) {
$dd1=toto();
$dd0=toto(); //CRASH HERE .............
var_dump($dd1);
}
echo "ok";