Making a new line with single quotes?

问题

Can I do a line break like this '\n'?

Or do I must use double quotes - "\n"?

回答1:

You have to use double quotes. Otherwise, PHP will literally output \n.

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

回答2:

To output a newline (or any other control character for that matter) you must always use double quotes.

An alternative to not use double quotes is chr() with the respective ASCII code as an argument:

echo chr(10); // same as echo "\n";

回答3:

just add

.PHP_EOL;

to the end of your line using single quotes and you will have a new line

回答4:

No - \n in single quotes is '\n'.
Yes - you have to use double quotes.

来源：https://stackoverflow.com/questions/7890217/making-a-new-line-with-single-quotes