PHP: Loop alphabetically like excel sheet.

[lilmer]

I have a code here:

 

$length = 90;

  for ($i=65; $i<=$lenght; $i++){
   $out .= "<th>".chr($i)."</th>";
   }

 

It output from A-Z;

 

but when I add value on $length; the next output is opening bracket " [ ".

 

What I want is A -Z AA, AB etc. like spreadsheet do.

 

 

or maybe someone can give me resources on how to create Google like Spreadsheet using PHP js. thanks!

[kicken]

for ($i='a',$x=0; $x<100; $x++,$i++){
  var_dump($i);
}

[lilmer]

OMG! that was amazing!. . another knowledge was given.. THANK you!