[RESOLVED] PHP: Mimic built in function

I must admit, that I am fascinated with method bind result

$stmt->bind_result($col1, $col2);

Because it can take non fixed number of arguments.
In this case those are variables, which were NOT created / declared anywhere before!

They also are referenced and get value later.

I've tried to recreate that behaviour, but failed!

PHP Code:

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function xperiment()
{
   
   $numargs = func_num_args();
    
   $arg_list = func_get_args();
   
   for ($i = 0; $i < $numargs; $i++)
   {
       $arg_list[$i] &= rand(1, 100);
       
       echo "Argument $i is: " . $arg_list[$i] . NL;
   }
   
}


xperiment($one, $two, $three);



echo "$one, $two, $three"; 


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I can't even make it free of:

Code:

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Notice:  Undefined variable:....

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And failed to reference it!


I think it would really be a fun, to "crack it" ;)

That's because you aren't declaring what $one, $two, and $three are when you pass them as variables to the function xperiment.

PHP Code:

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$one = 'One';
$two = 'Two';
$three = 'Three';

xperiment($one, $two, $three);

//or
xperiment('One', 'Two', 'Three'); 


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Quote:

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Originally Posted by PeejAvery

That's because you aren't declaring what $one, $two, and $three are when you pass them as variables to the function xperiment.....

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That is a point!

NOT to declare variables anywhere!
They FIRSTLY appear, like arguments supplied to that function:

PHP Code:

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xperiment($one, $two, $three); 


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JUST like in a case of stmt_bind_result.

Okay, I misread your first post.

The reason this happens is because of the mysqli class itself. I doubt you can recreate because of the need for variable declaration within PHP. If you were using C to write your own PHP class, then imitating it would be easy.

Actualy it is $stmt class in play, created by MySQLi class.

So..., that is final?
It can't be done!?

I wanted to create such function which would receive as many variables as I wanted.
That function would declare them and populate them with some values, by reference without returning them.

So I could just continue to use those vars normally inside PHP script.

Well, I guess it can't be done as PHP is created in C language.

You can create a function that will receive an infinite number of variables. But, the data passed as the parameters must be defined.

Quote:

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Originally Posted by PeejAvery

You can create a function that will receive an infinite number of variables. But, the data passed as the parameters must be defined.

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Yes, I know that.
But, after that comes PHP's limitation.