How to replace - with – using php

How do i replace - with – using php htmlspecialchars()

$content = $_POST['content'];开发者_开发问答

You don't, - is not a special character and as such will not be touched by htmlspecialchars(). And - is not even same as – (- vs. –).

You can use str_replace() if you want to:

$content = str_replace('-', '–', $_POST['content']);

htmlentities() will convert – to – (and take care of any other entities as well).

Just make sure you specify the correct character set, e.g.:

echo htmlentities($string, ENT_QUOTES, 'UTF-8');