When I use regex functions in the script like split or ereg, php script can't generate HTML.
The browser write :document contains no data.
The usage of the functions is correct.
The bug is surely in the regex functions.

This script don't write the '2' and not even the '1' if there's a split function in the script :
echo "1";
$args = split (":","ab:DF:SD");
echo "2";