[php] Explode PHP string by new line

Simple, right? Well, this isn't working :-\

$skuList = explode('\n\r', $_POST['skuList']);

this php function explode string by newline

Attention : new line in Windows is \r\n and in Linux and Unix is \n
this function change all new lines to linux mode then split it.
pay attention that empty lines will be ignored

function splitNewLine($text) {
    $code=preg_replace('/\n$/','',preg_replace('/^\n/','',preg_replace('/[\r\n]+/',"\n",$text)));
    return explode("\n",$code);
}

example

$a="\r\n\r\n\n\n\r\rsalam\r\nman khobam\rto chi\n\rche khabar\n\r\n\n\r\r\n\nbashe baba raftam\r\n\r\n\r\n\r\n";
print_r( splitNewLine($a) );

output

Array
(
    [0] => salam
    [1] => man khobam
    [2] => to chi
    [3] => che khabar
    [4] => bashe baba raftam
)

If anyone else tried this but it wasn't working, this is a reminder that you might have done the same brain fart as I.

Have you mysql escaped the string first? In this case newline character is no longer a newline character.

I didn't do anything to avoid parsing it, just adapted and exploded by '\n' (literally backslash and n rather than actual newline character.

try

explode(chr(10), $_POST['skuList']);

As easy as it seems

$skuList = explode('\\n', $_POST['skuList']);

You just need to pass the exact text "\n" and writing \n directly is being used as an Escape Sequence. So "\\" to pass a simple backward slash and then put "n"

First of all, I think it's usually \r\n, second of all, those are not the same on all systems. That will only work on windows. It's kind-of annoying trying to figure out how to replace new lines because different systems treat them differently (see here). You might have better luck with just \n.

Not perfect but I think it must be safest. Add nl2br:

$skuList = explode('<br />', nl2br($_POST['skuList']));

Lots of things here:

• You need to use double quotes, not single quotes, otherwise the escaped characters won't be escaped.
• The normal sequence is \r\n, not \n\r.
• Depending on the source, you may just be getting \n without the \r (or even in unusual cases, possibly just the \r)

Given the last point, you may find preg_split() using all the possible variants will give you a more reliable way of splitting the data than explode(). But alternatively you could use explode() with just \n, and then use trim() to remove any \r characters that are left hanging around.

Have you tried using double quotes?

This method always works for me:

$uniquepattern="@#$;?:~#abcz"//Any set of characters which you dont expect to be present in user input $_POST['skuList'] better use atleast 32 charecters.
$skuList=explode($uniquepattern,str_replace("\r","",str_replace("\n",$uniquepattern,$_POST['skuList'])));

Try this:

explode(PHP_EOF, $lines);

PHP_EOL is ostensibly used to find the newline character in a cross-platform-compatible way, so it handles DOS/Unix issues.

Try this:

$myString = "Prepare yourself to be caught
You in the hood gettin' shot
We going throw hell of blows
got my whole frame froze";

$myArray = explode(PHP_EOL, $myString);

print_r($myArray);

Try "\n\r" (double quotes) or just "\n".

If you're not sure which type of EOL you have, run a str_replace before your explode, replacing "\n\r" with "\n".

It doesn't matter what your system uses as newlines if the content might be generated outside of the system.

I am amazed after receiving all of these answers, that no one has simply advised the use of the \R escape sequence. There is only one way that I would ever consider implementing this in one of my own projects. \R provides the most succinct and direct approach.

https://www.php.net/manual/en/regexp.reference.escape.php#:~:text=line%20break:%20matches%20\n,%20\r%20and%20\r\n

Code: (Demo)

$text = "one\ntwo\r\nthree\rfour\r\n\nfive";

var_export(preg_split('~\R~', $text));

Output:

array (
  0 => 'one',
  1 => 'two',
  2 => 'three',
  3 => 'four',
  4 => '',
  5 => 'five',
)

Place the \n in double quotes:

explode("\n", $_POST['skuList']);

In single quotes, if I'm not mistaken, this is treated as \ and n separately.

For a new line, it's just

$list = explode("\n", $text);

For a new line and carriage return (as in Windows files), it's as you posted. Is your skuList a text area?

Losing line breaks from posting from input textboxes?
What works faster for me is to copy paste any text or Excel or HTML table type or newline type of data and paste it into a textarea instead of an inputextbox: this keeps the linebreaks intact in the POST.

 <textarea  id="txtArea" name="txtArea" rows="40" cols="170"></textarea>
 <br>
 <input type="submit" value="split lines into array" /> 

in the form receiving file:

 $txtArea ='';  
 $txtArea = $_POST['txtArea'];  
 $TA = $_POST['txtArea'];  
 $string = $TA;  
 $array = preg_split ('/$\R?^/m', $string); 
// or any of these: 
// $array = explode(PHP_EOL,$string);  
// $array = explode("\n", $txtArea); 
 echo "<br>A0: ".$array[0];
 echo "<br>A1: ".@$array[1];
 echo "<br>A2: ".@$array[2];

Cover all cases. Don't rely that your input is coming from a Windows environment.

$skuList = preg_split("/\\r\\n|\\r|\\n/", $_POST['skuList']);

or

$skuList = preg_split('/\r\n|\r|\n/', $_POST['skuList']);

Here is what worked for me. Tested in PHP 5.6 as well as as PHP 7.0:

    $skuList = str_replace("\\r\\n", "\n", $_POST['skuList']);
    $skuList = str_replace("\\n\\r", "\n", $skuList);

    $skuList = preg_split("/\n/", $skuList);
    print_r($skuList);