Preserve format of data send through textarea

Hello,
I need to know if there is a way of preserving the exact format of data that is send through a textarea. The data is send via $_POST variable from the submit page, and is written in a file. However, when I see the output file, I get:

[code]
MKKTAIAIAVALAGFATVAQAAPKDNTWYTGAKLGWSQYHDTGFINNNGPTHENQLGAGA

FGGYQVNPYVGFEMGYDWLGRMPYKGSVENGAYKAQGVQLTAKLGYPITDDLDIYTRLGG

MVWRADTKSNVYGKNHDTGVSPVFAGGVEYAITPEIATRLEYQWTNNIGDAHTIGTRPDN

GMLSLGVSYRFGQGEAAPVVAPAPAPAPEVQTKHFTLKSDVLFNFNKATLKPEGQAALDQ

LYSQLSNLDPKDGSVVVLGYTDRIGSDAYNQGLSERRAQSVVDYLISKGIPADKISARGM

GESNPVTGNTCDNVKQRAALIDCLAPDRRVEIEVKGIKDVVTQPQA

[/code]

instead of

[code]
MKKTAIAIAVALAGFATVAQAAPKDNTWYTGAKLGWSQYHDTGFINNNGPTHENQLGAGA
FGGYQVNPYVGFEMGYDWLGRMPYKGSVENGAYKAQGVQLTAKLGYPITDDLDIYTRLGG
MVWRADTKSNVYGKNHDTGVSPVFAGGVEYAITPEIATRLEYQWTNNIGDAHTIGTRPDN
GMLSLGVSYRFGQGEAAPVVAPAPAPAPEVQTKHFTLKSDVLFNFNKATLKPEGQAALDQ
LYSQLSNLDPKDGSVVVLGYTDRIGSDAYNQGLSERRAQSVVDYLISKGIPADKISARGM
GESNPVTGNTCDNVKQRAALIDCLAPDRRVEIEVKGIKDVVTQPQA
[/code]

Should I add something in my php submit page in the textarea part or is it something I have to do with the data before I write it in the file?

Thank you

Also in #PHP _↴