Php implode array by newline : You can use PHP_EOL to implode array by line break.
Php implode array by newline break
$array = implode(PHP_EOL, $array);
Which will break the string at the break line.
Php explode array at line break Example
$array = array('a','b','c');
$string = explode(PHP_EOL, $array);
echo $string;
// will produce
// a
// b
// c