Changing \n into ARRAY values within another ARRAY - php

Question

I have this ARRAY sent from a FORM
Array
(
[0] => one
two
three
[1] => hello
how
are
)
Since the values are sent via textarea from a form, it has line breakers, so I want to make change every into a array field like so:
Array
(
[0] => Array
(
[0] => one
[1] => two
[2] => three
)
[1] => Array
(
[0] => hello
[1] => how
[2] => are
)
)
This is what I have so far:
foreach ($array as &$valor) {
foreach(preg_split("/((\r?\n)|(\r\n?))/", $valor) as $line){
$arraynew[] = $line;
}
}
But I get this result
Array
(
[0] => one
[1] => two
[2] => three
[3] => hello
[4] => how
[5] => are
)
What am I doing wrong? :(

Answer 1

For each key in the POST array, pop a value onto the final array, with it's values containing an array whoses values represent each line in value of the POST array.
<?php
$data = array(
0 => "one\ntwo\nthree",
1 => "hello\nhow\nare"
);
$final = array();
for($i = 0; $i < count($data); $i++) {
$row = preg_split('/\n/', $data[$i]);
if(is_array($row)) {
for($j = 0; $j < count($row); $j++) {
$final[$i][] = $row[$j];
}
}
}
var_dump($final);
array(2) {
[0] =>
array(3) {
[0] =>
string(3) "one"
[1] =>
string(3) "two"
[2] =>
string(5) "three"
}
[1] =>
array(3) {
[0] =>
string(5) "hello"
[1] =>
string(3) "how"
[2] =>
string(3) "are"
}
}
DEMO

Answer 2

Well, you're really working too hard.
array_map(function($e) { return explode("\n", $e); }, $orig_array);
is all you need. You could use preg_split if you really want, but explode is enough.

Answer 3

You can simply do this
$array=array("one\ntwo\nthree","hello\nhow\nare");
$arraynew=array();
foreach ($array as &$valor) {
$arraynewtemp=array();
foreach(preg_split("/((\r?\n)|(\r\n?))/", $valor) as $line){
$arraynewtemp[] = $line;
}
array_push($arraynew,$arraynewtemp);
}
var_dump($arraynew);
Will output
array(2) {
[0]=>
array(3) {
[0]=>
string(3) "one"
[1]=>
string(3) "two"
[2]=>
string(5) "three"
}
[1]=>
array(3) {
[0]=>
string(5) "hello"
[1]=>
string(3) "how"
[2]=>
string(3) "are"
}
}
This should works