Detect EOL type using PHP

Question

Reference: This is a self-answered question. It was meant to share the knowledge, Q&A style.

How do I detect the ty

Answer 1

Wouldn't it be easier to just replace everything except new lines using regex?

_{The dot matches a single character, without caring what that character is. The only exception are newline characters.}

With that in mind, we do some magic:

$string = 'some string with new lines';
$newlines = preg_replace('/.*/', '', $string);
// $newlines is now filled with new lines, we only need one
$newline = substr($newlines, 0, 1);

Not sure if we can trust regex to do all this, but I don't have anything to test with.