Apache crashes with eval() - Function

[McIheal]

I'm using apache / php 4.xx (windows 2000).
Here is a code fragment that causes crashing of the webserver:

foreach ($field AS $id => $fld)
  eval ("form_".$fld[type]."(\$id,\$fld[name],\$fld[value],\$fld[options]);");

Any idea why? Had anyone related problems regarding the eval()-function on windows platforms? On my linux machine it works fine?!
TNX McIheal