Description:
------------
Maybe it's nothing but my stupidness ;)

When I do this ->

$headers = imap_fetch_overview($mbox,$start.":{$end}",0);

for ($i = 0; $i <= count($headers) ; $i++) {
    $headers[$i]->subject="fritz";
}

--> Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 43 bytes) ...

When I do this ->

$headers = imap_fetch_overview($mbox,$start.":{$end}",0);

$temp=count($headers);

for ($i = 0; $i <= $temp ; $i++) {
    $headers[$i]->subject="fritz";
}

--> All fine...

$headers has 3 records...

cheers