How to implode with carraige return ?

I have 3 elements in an array

$arr[1] = " 1 | Manisha ";
$arr[2] = " 2 | Milind ";
$arr[3] = " 3 | Aish ";

I want to implode it to string first and later on want to write in to txt 
file.

I tried to implode  this chr(13) as a separator. I tried with $arr[1] = "1 
| Manisha \n\r" as an array element.

But I do not see new line, instead I see small square box.

Server environment - Unix - PHP4
I see file after ftp to my computer (Win 98)

Thanks in advance
Manisha



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