Getting all e-mail from a file

[jacrewq]

I have a file that contains some e-mails. How could I get all the e-mails from that file and save them in another?

Thanks,
Alex

[diego25]

Maybe use the copy() function, which copies one file to another.

Diego

[jacrewq]

I have to filter all the e-mails from one file into another.

Like if I had one.txt:

Bob's e-mail is [e-mail] and Tom's e-mail is [e-mail] and more e-mails in this file .....

I need PHP to take all the e-mails out of that file and put them into another like:

emails.txt

[e-mail]

[e-mail]