PHP newline Php_eol

In the Unix world to line up with/n instead, but windows in order to reflect his differences, the use of/r/n, more interesting is the Mac with/R. So the UNIX series with the/n,windows series with the/r/n,mac with/R, so that you write the program on different platforms run with a lot of trouble. Here are some common ways to remove line breaks from PHP.

The first type of notation:
$content =str_replace ("\ n", "", $content);
Echo $content;

The second way:
Str_replace ("\ r \ n", "", $str);

The third type of notation:
$content =preg_replace ("/\s/", "", $content);
Echo $content;

Php_eol is a well-defined variable that represents the PHP newline character, which changes depending on the platform, is/r/n under Windows,/n under Linux, and/R under Mac. Line-up will be as follows.
$str = Str_replace (Php_eol, ", $STR);

PHP newline Php_eol