Question

我有以下字符串：

Hello Eric,

Thank you very much for the links. This was exactly what I needed.

Greetings,
John

我正在使用php的nl2br函数将新行转换为正常工作的换行符。在我的字符串上运行nl2br函数后，它变为：

Hello Eric,<br />

Thank you very much for the links. This was exactly what I needed.<br />

Greetings,<br />
John

到目前为止，这正是我想要实现的目标。但是，我现在需要将包含换行符的新字符串转换为单行，如下所示：

Hello Eric,<br />Thank you very much for the links. This was exactly what I needed.<br />Greetings,<br />John

我尝试过几种不同的方法，但似乎都没有。以下是我尝试过的一些事情：

$str = str_replace(array("\r","\n"),"",$str);

$str = str_replace(array("\r\n", "\n", "\r"), "", $str);

$str = preg_replace( "/\r|\n/", "", $str);

但这些都不适合我。

Answer 1

试试这个：

$str = str_replace(array("\r\n","\n"),"",$str);

而不是

$str = str_replace(array("\r","\n"),"",$str);