Writing TXT File with PHP, Want to Add an Actual Line Break

问题

I am writing a TXT file using PHP. I want to insert actual line breaks into the TXT file wherever necessary. I have tried all combinations of \n \r \r\n \n\r ... but these are not causing any linebreaks to appear - in most cases, I am seeing the text "\n" appear in the TXT file, with no linebreak.

I have also tried chr(13).

Any other ideas would be appreciated.

回答1:

Sounds to me like you might be using single quotes, i.e. '\n' rather than "\n".

If you wanted to continue with a single quotes bias (as you should!), two options:

file_put_contents('/path/to/file.txt', 'Hello friend!
This will appear on a new line.
As will this');

// or

file_put_contents('/path/to/file.txt', 'Hello friend!'."\n".'This will appear on a new line.'."\n".'As will this');

回答2:

For "\n" to work, you need to use double quotes, not '\n'.

But you should use the constant PHP_EOL instead, so that it adapts automatically to the OS ("\n", "\r" or "\r\n").

file_put_contents('file.txt', 'Bla' . PHP_EOL . 'Bla');

回答3:

\r\n in a windows server \n in linux Make sure you upload the file as ASCII.

回答4:

You must write \n in a double-quoted string (in single-quoted strings no parsing takes place):

"foo\r\nbar"

Further reference:

http://es2.php.net/manual/en/language.types.string.php

回答5:

you could also use chr(10) which is line break.

来源：https://stackoverflow.com/questions/3857038/writing-txt-file-with-php-want-to-add-an-actual-line-break