[php] explode Opcje

[kyku]

Witam. Chcialbym zrobic by z:

Kod

jakistekst1/jakistekst2/tekst3/jakistekst4 ...

zrobilo sie

Kod

jakistekst1/jakistekst2/tekst3

czyli o jedno mniej
ilosc jak i tekst sa zmienne

zrobilem to tak:

[PHP] pobierz, plaintext 
<?php
$e = explode('/', $folder);
if(!isset($e[0])){ $folder2 = "";
} else if(!isset($e[1])){ $folder2 = "";
} else if(!isset($e[2])){ $folder2 = "$e[0]";
} else if(!isset($e[3])){ $folder2 = "$e[0]/$e[1]";
} else if(!isset($e[4])){ $folder2 = "$e[0]/$e[1]/$e[2]";
} else if(!isset($e[5])){ $folder2 = "$e[0]/$e[1]/$e[2]/$e[3]";
} else if(!isset($e[6])){ $folder2 = "$e[0]/$e[1]/$e[2]/$e[3]/$e[4]";
} else if(!isset($e[7])){ $folder2 = "$e[0]/$e[1]/$e[2]/$e[3]/$e[4]/$e[5]";
} else if(!isset($e[8])){ $folder2 = "$e[0]/$e[1]/$e[2]/$e[3]/$e[4]/$e[5]/$e[6]";
} else if(!isset($e[9])){ $folder2 = "$e[0]/$e[1]/$e[2]/$e[3]/$e[4]/$e[5]/$e[6]/$e[7]";
} else if(!isset($e[10])){ $folder2 ="$e[0]/$e[1]/$e[2]/$e[3]/$e[4]/$e[5]/$e[6]/$e[7]/$e[8]";
} else if(!isset($e[11])){ $folder2 ="$e[0]/$e[1]/$e[2]/$e[3]/$e[4]/$e[5]/$e[6]/$e[7]/$e[8]/$e[9]";
} else if(!isset($e[12])){ $folder2 ="$e[0]/$e[1]/$e[2]/$e[3]/$e[4]/$e[5]/$e[6]/$e[7]/$e[8]/$e[9]/$e[10]";
} else if(!isset($e[13])){ $folder2 ="$e[0]/$e[1]/$e[2]/$e[3]/$e[4]/$e[5]/$e[6]/$e[7]/$e[8]/$e[9]/$e[10]/$e[11]";
} else if(!isset($e[14])){ $folder2 ="$e[0]/$e[1]/$e[2]/$e[3]/$e[4]/$e[5]/$e[6]/$e[7]/$e[8]/$e[9]/$e[10]/$e[11]/$e[12]";
} else if(!isset($e[15])){ $folder2 ="$e[0]/$e[1]/$e[2]/$e[3]/$e[4]/$e[5]/$e[6]/$e[7]/$e[8]/$e[9]/$e[10]/$e[11]/$e[12]/$e[13]";
} else { $folder2 = $e[0]; }
?>
[PHP] pobierz, plaintext 

i dziala ale jak widac kod nie jest wydajny ani nic z tych rzeczy i dziala tylko do 15

robilem to tez tak:

[PHP] pobierz, plaintext 
<?php
$e = explode('/', $folder);
 $licze = count($e);
  $folder2 = "";
  for($z=0; $z < $licze; $z++){
  $folder2 += "/$e[$z]"; // to nie dziala na tekscie..
}
?>
[PHP] pobierz, plaintext 

ale $folder2 byl rowny 0..

W jaki sposob moge to wykonac ? mam nadzieje ze wytlumaczylem o co chodzi