PHP-MapScript Memory Exhaustion Error

[John Gorkos]

Gurus-
  I am writing a PHP-MapScript script which pulls a list of points from a DB, 
and plots them on the map using multiple styles per point.  The styles are 
dynamically altered in the script to basically draw a small bar graph with 7 
bars at each map point, to reflect various health parameters of some remote 
equipment.
 I have mad this work in perl.  Under PHP, I am allowed to add two styles per 
point, but when I add the third, I get this:
Fatal error: Allowed memory size of 8388608 bytes exhausted (tried to allocate 
75 bytes) in /var/www/html/foo.phtml

The code snippet which produces this is as follows:
$image=$map->draw();

$meterLayer = $map->getLayerByName("Endpoints");
$meterClass0 = $meterLayer->getClass(0);
$rs= mssql_query ($sql, $con);

$red = array(255,255,255,225,0,150,0);
$green = array(255,0,255,0,200,100,0);
$blue = array(255,0,0,150,150,50,255);

while ( $row = mssql_fetch_row($rs)) {
  for ( $i=0; $i<3; $i++ ) {
    $meterStyle[$i] = $meterClass0->getStyle($i);
    $meterStyle[$i]->outlinecolor->setRGB($red[$i],$green[$i],$blue[$i]);
    $meterStyle[$i]->color->setRGB($red[$i],$green[$i],$blue[$i]);
    $meterStyle[$i]->set('offsetx',$i*3);
    $meterStyle[$i]->set('offsety',0);
  }
  $point = ms_newPointObj();
  $point->setXY((-1)*$row[1],$row[0]);
  $point->draw($map,$meterLayer,$image,0,$row[2]);
}

$image_url=$image->saveWebImage();

If the "3" in the for loop above is set to 2 or 1, it works fine, but I need 
it to be an 8, which obviously fails.  More code available on request.

I am using Mapserver 2.6, PHP 5.0.4.  The machine is 64-bit Mandrake Linux 
installation on dual Xeons with 2GB of physical ram, yadda yadda.  It's a 
healthy machine, and has run this same type of code under 2.6beta3 with Perl 
Mapscript.  However, I formatted the box to switch from SuSE to Mandrake, and 
forgot to copy the perl script over before I formatted the / partition 
(insert lots of comments about backups, etc),so I'm rewriting in PHP since I 
was shamed into learning in on the #mapserver irc channel.

Anyone have any thoughts on where I'm wrong, or is this a bug?

John Gorkos
AMDS Wireless, LLC