你试过用双引号吗?

try

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

试试这个:

explode(PHP_EOF, $lines);

这个方法对我来说总是有效的:

$uniquepattern="@#$;?:~#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'])));

你试过用双引号吗?

以下是对我有效的方法。在PHP 5.6和PHP 7.0中测试:

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

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