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Replace Characters Not Listed In A Whitelist Array
matthewtbaker posted a topic in PHP Coding HelpHi, I have created an array with symbols that I'd like to allow in a string of text. $symbols = '>'; // Greater Than or Open Angle Bracket $symbols = '<'; // Less Than or Close Angle Bracket $symbols = '/'; // Forward Slash $symbols = '\\'; // Back Slash $symbols = '&'; // Ampersand $symbols = '£'; // Pound Sterling $symbols = '$'; // Dollar $symbols = '\"'; // Quotation Marks $symbols = '\''; // Apostrophe $symbols = '#'; // Hash $symbols = ' '; // Space $symbols = '.'; // Period I would now like to use something like str_replace or preg_replace (whichever is best) to replace any character that is not included within the array $symbols with "". I know there are other ways to filter characters but it isn't a suitable solution considering who will be maintaining it... :-\ I'm hoping for something like; but obviously a working way. $myText = str_replace(!$symbols, "", $myText; $myText = preg_replace(!$symbols, "", $myText; Thank you for your help.