When do I use the PHP constant “PHP_EOL”?

Question

When is it a good idea to use PHP_EOL?

I sometimes see this in code samples of PHP. Does this handle DOS/Mac/Unix endline issues?

Answer 1

You are writing code that predominantly uses single quote strings.

echo 'A $variable_literal that I have'.PHP_EOL.'looks better than'.PHP_EOL;  
echo 'this other $one'."\n";