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>

只使用'base'包也是简单情况下的解决方案:

> s <- "a\nb\rc\r\nd"
> l <- strsplit(s,"\r\n|\n|\r")
> l  # the whole list...
[[1]]
[1] "a" "b" "c" "d"
> l[[1]][1] # ... or individual elements
[1] "a"
> l[[1]][2]
[1] "b"
> fun <- function(x) c('Line content:', x) # handle as you wish
> lapply(unlist(l), fun)

你可以使用爆炸函数，使用“\n”作为分隔符:

$your_array = explode("\n", $your_string_from_db);

例如，如果你有这样一段代码:

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

你会得到这样的输出:

array
  0 => string 'My text1' (length=8)
  1 => string 'My text2' (length=8)
  2 => string 'My text3' (length=8)

注意，必须使用双引号字符串，因此\n实际上被解释为换行符。 (详情请参阅手册页。)

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>

explode("\n", $str);

"(而不是')非常重要，否则换行符不会被解释。

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);
?>