I have a reproducible bug when I use a script.
A script contains the following code:

for ($i=0; $i<sizeof($motcle); $i++)
{
$href1="<a href='visu.php?fiche=".$motcle[$i][1]."&hist=1'>";
$href2="</a>";
$txt=ereg_replace($motcle[$i][0],$href1.$motcle[$i][0].$href2,$txt);

Where $txt is a page of various txt.

If the ereg_replace function find an occurence of $motcle[][] in the $txt variable, there give a crash of PHP.exe

This bug appears only when the script is call by an link.
If I affich the page with an // before the ereg_replace and then I delete the // and I refresh the page it works...