php error

<form action="sayi.php" method="post">

  
   input a number between 1-99:

  <input name="number" type="text" id="number">
  <input name="ok" type="submit"  value="ok">

</form>

<?php

$A = $_REQUEST["number"];
$B = $_REQUEST["number"];

echo ("number  ");

if ($A<10)  $B=$A;

	else if ($A>=10 && $A<20) { $B=$A-10; echo("ten ");}
	else if ($A>=20 && $A<30) { $B=$A-20; echo("twenty ");}
	else if ($A>=30 && $A<40) { $B=$A-30; echo("thirty ");}
	else if ($A>=40 && $A<50) { $B=$A-40; echo("fourty ");}
	else if ($A>=50 && $A<60) { $B=$A-50; echo("fifty ");}
	else if ($A>=60 && $A<70) { $B=$A-60; echo("sixty ");}
	else if ($A>=70 && $A<80) { $B=$A-70; echo("seventy ");}
	else if ($A>=80 && $A<90) { $B=$A-80; echo("eighty ");}
	else if ($A>=90 && $A<100){ $B=$A-90; echo("ninety ");}

if ($B==1) echo("one");

	else if ($B==2) echo("two");
	else if ($B==3) echo("three");
	else if ($B==4) echo("four");
	else if ($B==5) echo("five");
	else if ($B==6) echo("six");
	else if ($B==7) echo("seven");
	else if ($B==8) echo("eight");
	else if ($B==9) echo("nine");
	

if ($A >= 100 || $A <= 0 ) 
{
echo "only must be between 1-99!";
}



?>    

Code (markup):

When I have these codes run,I am getting these errors.

 

what errors are you getting? it's quite hard to debug your script without knowing what exactly is wrong.

 

Notice: Undefined index: sayi in c:\inetpub\wwwroot\sayi.php on line 13

Notice: Undefined index: sayi in c:\inetpub\wwwroot\sayi.php on line 14

 

It is not an error. It is only a notice saying that you have used an undefined variable. It is being shown because in your php.ini contains the setting to show notices too. When you upload to the server, it will vanish.

Or if you are that uncomfortable with the notice, use

// The 0 below should be replaced with whatever number you want as the default value for $A & $B
$A = isset($_REQUEST["number"]) ? $_REQUEST["number"] : 0;
$B = isset($_REQUEST["number"]) ? $_REQUEST["number"] : 0; // Better option will be $B = $A;

Code (markup):