PHP
(simple examples)
DEFINE VARIABLE $lines = "Line 1 Line 2 Line 3";
ECHO OUTPUT echo "Line 1 Line 2 Line 3";
MAC USES \r, LINUX USES \n, WINDOWS USES \r\n
JUST USE \r\n REGARDLESS $lines = "Line1 \r\n Line 2";
ONLY WORK WITH DOUBLE QUOTES $bad = 'Line1 \r\n Line 2';
PHP_EOL IS AUTOMATICALLY \r, \n, OR \r\n BASED ON THE OS.
$users = ["Joe", "Jon", "Joy"]; echo implode($users, PHP_EOL);
HTML BREAK <BR> $lines = "Line 1<br>Line 2";
NEW LINE TO <BR> $lines = "Line 1 Line 2"; echo nl2br($lines);