Need help with PHP problem

[CripDawg]

i have this PHP activity to do for my software design class we have a program that our teacher gave us that has two text boxes you put numbers in and it says witch one is bigger our job is to make it say "no data is entered" when both boxes are left blank the work sheet says the function "strlen" would be useful i figured that it shows the amount of characters in a string and tried ading my own IF statement but it doesn't work......  any help would be appreciated 

 

Code:

 

<?php

 $num1 = $_POST['number1'];

 $num2 = $_POST['number2'];

 

 if ($num1 == $num2)

 

 {

  echo "Numbers are equal" ;

   }

 

 else

 

   {

 

  if ($num1 > $num2)

 

   { 

echo "$num1 is bigger" ;  

   }

 

 else

 

   {

echo "$num2 is bigger";

   }

  

 if ($num1 && $num2 == sterlen == NULL

{

echo "no data was entered";

}

 

 } 

?>

 

[step1041]

Its been a while since I've done some basic PHP coding, but I did notice something with your code. In your description you mentioned "strlen" which would be string length, but in your code you have it down as "sterlen" which doesn't look right to me. So possibly a spelling mistake?

[fizzlesticks]

strlen is a function that must be passed a string. Doing strlen($num1) will give the length of the string $num1.

So you will need to doing something like:

if(strlen($num1) == 0 && strlen($num2) == 0) {    //do whatever}

It should also be the first check you do.

 

Also $num1 and $num2 are strings, to figure out which one has a bigger number you must convert them to numbers using intval($num1)

 

And lastly, please use code tags.

[CripDawg]

strlen is a function that must be passed a string. Doing strlen($num1) will give the length of the string $num1.

So you will need to doing something like:

if(strlen($num1) == 0 && strlen($num2) == 0) {    //do whatever}

It should also be the first check you do.

 

Also $num1 and $num2 are strings, to figure out which one has a bigger number you must convert them to numbers using intval($num1)

 

And lastly, please use code tags.

thanks at least it works now but  it just prints "numbers are equal" because they are both the same value  

[fizzlesticks]

thanks at least it works now but  it just prints "numbers are equal" because they are both the same value  

That's why it needs to be the first check done.

if(strlen($num1) == 0 && strlen($num2) == 0) {}else if(num1 == num2){}else if(num1 > num2){}else //num1 < num2{}

[topsu]

You can also use 

if(isset($num1) && isset($num2)){}

Which checks if variables are set and aren't null.

[CripDawg]

 

That's why it needs to be the first check done.

if(strlen($num1) == 0 && strlen($num2) == 0) {}else if(num1 == num2){}else if(num1 > num2){}else //num1 < num2{}

Thanks dude works perfectly you've been a big help