special-characters

I use MySQL to store data and my web pages are all encoded as UTF-8. I have a lot of Portuguese characters such as ç and õ and I'm wondering if I should HTML-escape them before storage. Should we store & as & , for example? And why (not)? What are the advantages and disadvantages / best practices? Don't HTML-encode your characters before storage. You should store as pure a form of your data as possible. HTML encoding is needed because you are going to display the data on an HTML page, so do the encoding during the processing of the data to create the page. For example, suppose you decide you

Let's assume we have a text that contains a Unicode character that cannot be displayed because our font has no corresponding glyph. Usually, a placeholder is displayed instead, e.g. a rectangular block thingy (see screenshot). Is there a "glyph not found" character that reliably produces this glyph? I'd like to write something like "If the following text contains <insert character here> then you need another font..." in a UI. By the way, I am not talking about � ( replacement character ). This one is displayed when a Unicode character could not be correctly decoded from a data stream. It does

I am trying to read a csv file using pandas and the file has a column called Tags which consist of user provided tags and has tags like - , "", '',1950's, 16th-century. Since these are user provided, there are many special characters which are entered by mistake as well. The issue is that I cannot open the csv file using pandas read_csv. It shows error:Cparser, error tokenizing data. Can someone help me with reading the csv file into pandas? Okay. Starting from a badly formatted CSV we can't read: >>> !cat unquoted.csv 1950's,xyz.nl/user_003,bad, 123 17th,red,flower,xyz.nl/user_001,good,203 ""

Recently one of my friend encountered this question in an interview. The interviewer asked him if the special characters like $, @, |, ^, ~ have any usage in c or c++ and where. I know that |, ^ and ~ are used as Bitwise OR, XOR and Complement respectively. But I don't know if @ and $ has any special meaning. If it does, could you please give example where it can be applied? @ is generally invalid in C; it is not used for anything. It is used for various purposes by Objective-C, but that's a whole other kettle of fish. $ is invalid as well, but many implementations allow it to appear in

I still don't understand how iconv works. For instance, $string = "Löic & René"; $output = iconv("UTF-8", "ISO-8859-1//TRANSLIT", $string); I get, Notice: iconv() [function.iconv]: Detected an illegal character in input string in... $string = "Löic"; or $string = "René"; I get, Notice: iconv() [function.iconv]: Detected an incomplete multibyte character in input string in. I get nothing with $string = "&"; There are two sets of different outputs I need store them in the two different columns inside the table of my database, I need to convert Löic & René to Loic & Rene for clean url purposes. I

I am creating a file that is to be saved on a local user's computer (not rendered in a web browser). I am currently using html_entity_decode , but this isn't converting characters like – (which is the n-dash) and was wondering what other function I should be using. For example, when the file is imported into the software, instead of the ndash or just a - it shows up as – . I know I could use str_replace , but if it's happening with this character, it could happen with many others since the data is dynamic. You need to define the target character set. – is not a valid character in the default