From: "Mark" <[EMAIL PROTECTED]>
> I seem to learn something new every time you or Jennifer post (many
> others as well). I never knew about variable functions. Cool!
You're welcome. I wouldn't recommend that solution exactly (an abstraction
class would be better), but the functions do come in handy.
For example, I use variable function in one of my validation classes. I have
a main method called check() that is passed a "type" and a "value". The
"type" must match a method in the class. The check() method does some
default checking and then passes the $value to the $type() method for
further checking...
class Validate
{
function check($type,$value)
{
if($empty($value))
{ return FALSE; }
if(method_exists($this,$type))
{ $retval = $this->$type($value); }
return $retval;
}
function number($value)
{
if(preg_match('/[^0-9]/',$value))
{ return FALSE; }
else
{ return $value; }
}
}
Where "number" is one of the types that'll be validated.
$val = new Validate;
$val->check('number',$_POST['somevalue']);
$val->check('date',$_POST['somedate']);
$val->check('phone',$_POST['phone_number']);
etc...
Where you'd have a phone() and date() method in the Validate class... I
think that's the only place I've used variable-functions... or
variable-methods, rather. :)
---John Holmes...
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