Question

I got this code…it’s used two loops for.., can u explain how it’s work ? the result is 16

for($i=1; $i<=2; $i++)
    {
       for($j=1; $i<=5; $i++)
       {
          if($i == 1)
             echo $j;
          elseif($i ==2)
             echo $j+5;
       }
    } 

but if I make like this

for($i=1; $i<=2; $i++)
        {
           for($j=1; $i<=5; $i++)
           {
              if($i == 1)
                 echo $j;
              elseif($i ==2)
                 echo $j;
           }
        } 

the result is 11.

how can be ?

Answer 1

Your code is same as:

$j = 1;
for ($i = 1; $i <= 5; $i++) {
  if ($i == 1) {
    echo $j;
  }
  elseif ($i == 2) {
    echo $j + 5;
    // below is second piece code.
    // echo $j;
  }
}

So:

The first piece of code echo 1 and 1+5, which will be 16.

The second piece of code echo 1 and 1, which will be 11.