function trimchars($chars, $subject)
{
return preg_replace("/\s*([$chars])\s*/", '\1', $subject);
}
# V
# a b c d e => a bcd e
trimchars('c', 'a b c d e');
# V V
# 23 + 2 = 25 => 23+2=25
trimchars('+=', '23 + 2 = 25');
# V V V V V
# body{background:#fff;color:#fff;}
trimchars('{}:;', 'body { background: #fff; color: #fff; }');