大卫有一个伟大的方向，但它错过了\r。这招对我很管用:

$array = preg_split("/(\r\n|\n|\r)/", $string);

我一直都很成功地使用这个方法:

$array = preg_split("/\r\n|\n|\r/", $string);

(更新为最后的\r，谢谢@LobsterMan)

你可以用这个:

 \str_getcsv($str, PHP_EOL);

这个方法对我来说总是有效的:

$uniquepattern = "gd$#%@&~#" // Any set of characters which you don’t expect to be present in user input $_POST['text']. Better use at least 32 characters.
$textarray = explode($uniquepattern, str_replace("\r", "", str_replace("\n", $uniquepattern, $_POST['text'])));

我在PHP文档中找到了这个:

<?php
  // Split the phrase by any number of commas or space characters,
  // which include " ", \r, \t, \n and \f

  $keywords = preg_split("/[\s,]+/", "hypertext language, programming");
  print_r($keywords);
?>

Use:

$str = "My text1\nMy text2\nMy text3";
$arr = explode("\n", $str);

foreach ($arr as $line_num => $line) {
    echo "Line #<b>{$line_num}</b>: " . htmlspecialchars($line) . "<br />\n";
}

真正的数组:

$str = "My text1\nMy text2\nMy text3";
$arr = explode("\n", $str);

$array = array();

foreach ($arr as $line) { // loop line by line and convert into array
    $array[] = $line;
};

print_r($array); // display all value

echo $array[1]; // display index 1

嵌入在线:

正文，html, iframe { 宽度:100%; 高度:100%; 溢出:隐藏; ｝ <iframe src="https://ideone.com/vE1gst" ></iframe>