Parse a String into an Array with New Line Chain by Regex without any Remove in PHP

Question

I need to parse this string:

$str = "\n\n\nABC\n\nDEF\nGHI\n\n\nJKL" ;

into this array:

$arr = [
    "\n\n\n",
    "ABC\n",
    "\n",
    "DEF\n",
    "GHI\n",
    "\n\n",
    "JKL"
] ;

I tried many combinations, but no luck:

$arr = preg_match_all("/[^\n]+[\n]+/",$str,$out) ;

What Regex can handle that?

Why the three leading newlines are kept together but the three inner newlines come into separate strings in the posted example? What is the split rule? — axiac
– axiac, Commented Aug 12, 2017 at 9:59

Casimir et Hippolyte · Accepted Answer · 2017-08-11 20:47:08Z

3

This pattern does the job:

preg_match_all('~\n+|.+\n?~', $str, $matches);

As an aside, preg_match_all returns the number of matches or false, the matches are stored in the third parameter.

answered Aug 11, 2017 at 20:47

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2 Comments

"/[^\n]+|[\n]+/" also works very well, thank you very much!

You are right, thats my hurriedness :), thank you again!!