Explode a string by \r\n & \n & \r at once?

preg_split('/\R/', $str);

In PHP preg_split(), preg_match, and preg_replace the \R matches all line breaks of any sort.

http://www.pcre.org/pcre.txt

By default, the sequence \R in a pattern matches any Unicode newline sequence, whatever has been selected as the line ending sequence. If you specify

--enable-bsr-anycrlf

the default is changed so that \R matches only CR, LF, or CRLF. What- ever is selected when PCRE is built can be overridden when the library functions are called.

You can replace all occourences of breaking characters with a unique placeholder and then explode the string in an array, doing something like this:

$my_string = preg_replace(array('/\n/', '/\r/'), '#PH#', $my_string);
$my_array = explode('#PH', $my_string);

You can use a regular expression and preg_split instead:

$lines = preg_split('/\n|\r\n?/', $str);

The regular expression \n|\r\n? matches either a LF or a CR that may be followed by a LF.