删除字符串中的特殊字符[关闭]

Question

I am currently doing this:

$a = 'some string with special characters';
$a = htmlentities($a);
$a = trim(preg_replace('/&#?[a-z0-9]+;/i', '', $a));

This works but I am wondering if there's a more efficient way to do this?

Answer 1

it contains certain characters like  and I want to remove those.

Try utf8_decode, or more feature-filled:

$output = iconv("UTF-8", "ISO-8859-1//TRANSLIT", $input);

Documentation

The reason I bring this up is because what you are seeing are encoding issues, not "special characters".