Re: Re: optional argument when creating a function

Thank you everyone for your help. I tried this and it worked with throwing any errors. <CODE> function doEmail($username, $link = null) </CODE> Matthew Weier O'Phinney wrote:

* D A GERM <dgerm@shepherd.edu>:

I'm throwing a warning on a function I created. I thought a & in front of the argument was supposed to make it optional. Is there something else I need to do make that argument optional?

As others have noted, the ampersand tells the function to grab a reference to the variable passed. There are two ways to do optional arguments: 1) Set a default value for the argument (must be last argument in the list, or else all other arguments in the list must also have default values): function doEmail($username, $link = null) {} function doEmail($username, $link = null, $linkName = '') {} 2) Parse the argument list via the func_* functions: function doEmail($username) {

      $argCount = func_num_args();
      if (1 < $argCount) {
          // Retrieve second argument, from a 0-based array:
          $link = func_get_arg(1);
      }
      ...

} function doEmail($username) {

      $argCount = func_num_args();
      if (1 < $argCount) {
          // Retrieve all arguments
          $args = func_get_args();
                    // Remove $username from it
          array_shift($args);

          // Get $link:
          $link = array_shift($args);
      }
      ...

}

-- D. Aaron Germ Scarborough Library, Shepherd University (304) 876-5423 "Well then what am I supposed to do with all my creative ideas- take a bath and wash myself with them? 'Cause that is what soap is for" (Peter, Family Guy)