命名绑定变量在字符串中？

Question

I'm looking for function like sprintf(), except whereas with sprintf() you bind the values by order of arguments, I want something where I can bind variables by name. So, if I had the string "Hello $name! We're please to have you visit, $name!", you could pass an array or something and get the resultant string from it.

Something like the PDO statements, but just for plain strings, not database queries. What can I use?

Answer 1

preg_replace/e or preg_replace_callback is your best bet

  $vars = array('name' => 'Joe', 'age' => 25);
  $str = "@name is @age years old";
  echo preg_replace('/@(\w+)/e', '$vars["$1"]', $str);