Print newline in PHP in single quotes

Question

I try to use single quotes as much as possible and I\'ve noticed that I can\'t use \\n in single quotes. I know I can just enter a newline literally by pressing return, but

Answer 1

echo 'hollow world' . PHP_EOL;

Use the constant PHP_EOL then it is OS independent too.

Answer 2

The only escape sequence you can use in single quotes is for the single quote itself.

$foo = 'That\'s great';

The only way you could insert a new line into a string created with single quotes is to insert a literal newline

$bar = 'That\'s
cheating';

Answer 3

I wonder why no one added the alternative of using the function chr():

echo 'Hello World!' . chr(10);

or, more efficient if you're going to repeat it a million times:

define('C_NewLine', chr(10));
...
echo 'Hello World!' . C_NewLine;

This avoids the silly-looking notation of concatenating a single- and double-quoted string.

Answer 4

in case you have a variable :

$your_var = 'declare your var';
echo 'i want to show my var here'.$your_var.'<br>';

Answer 5

This worked well for me:

print_r('Hello world'.PHP_EOL);

Answer 6

No, according to documentation, PHP recognize no special symbol in single quotes. And there is no single reason to use single quotes as much as possible