htmlentities（）会删除返回字符和回车吗？

Question

I am creating a forum with PHP and MySQL with the help of PDO class. I have just started coding the forum and come up with a problem.

What I am doing is that

$post_body = htmlentities($_POST['post_body']);

get the user input like this and then send this to my function that then query this into the database like this

$str = $this->database->prepare('INSERT INTO `blah`,`blah_blah` VALUES(?,?)');
$str->bindValue(1,$someVal);
$str->bindvalue(2,$post_body);

$str->execute();

and when I display these details i do something like this

html_entity_decode($postDetails['post_body']); //$postDetails has been initialized correctly

Yes I have added try catches and handled the exceptions; but since this is a forum post, when a user presses return key, he/she expects to have a new line in the posted article. but when i display these posts i am losing every return/new lines in the post. Why and how do I get around this.

Explanation about wht this happens would be much appreciated!

Thanks in advance.

Answer 1

is not an html entity. It will not be decoded by that function.

Use nl2br to accomplish this like so:

echo nl2br(html_entity_decode($postDetails['post_body']))