计算矩形的平方数

I'm working on some PHP code but I'm stuck with a logic. I need to find out the number of squares from a rectangle.

I'm unable to implement this in PHP.

Please help.

I tried this:

function getcount($length,$breadth,$count=0){
  $min=min($length,$breadth);
  if($length>$breadth){
    $length=$length-$min;
    $count++;
    return getcount($length,$breadth,$count);
  }
  else if($breadth>$length){
    $breadth=$breadth-$min;
    $count++;
    return getcount($length,$breadth,$count);
  }
  else{
    $count+=($length/$min);
  }
  return $count;
}

But some how it doesn't pass all the use cases. And i do not know on which use cases, it fails?

I think the easiest way to calculate the number of squares in a rectangle is to substract the found squares from it while it disappears completely.

It works fine for me:

function getcount($width,$height) {
    $total=0;
    while($width && $height)
    {
        if($width>$height)
        {
            $width-=$height;
        }
        else if($height>$width)
        {
            $height-=$width;
        }
        else
        {
            $width=0;
            $height=0;
        }
        $total+=1;
    }
    return $total;
}

echo getcount(5,3)."<br/>";
echo getcount(5,5)."<br/>";
echo getcount(11,5)."<br/>";

Output:

4
1
7

In my opinion there is nothing wrong in your code. The output from the code in OP is exactly the same as the output of the code in the accepted answer. You can run this (where getcount() is the function from OP and getcount2() is the function from the Balázs Varga's answer):

for ($i=0; $i<10000; $i++)
{
    $a=mt_rand(1,50);
    $b=mt_rand(1,50);
    $r1 = getcount($a, $b);
    $r2 = getcount2($b, $b);
    if ($r1 != $r2)
    {
        echo "D'oh!";  
    }
}

and it will not return anything at all.

The only flaw is your code will throw a warning message when you run getcount(0, 0). Also, the second line in your code ($min=min($length,$breadth);) is a bit redundant. You can write the same this way:

function getcount($length,$breadth,$count=0){
    if($length>$breadth){
        $length=$length-$breadth;
        $count++;
        return getcount($length,$breadth,$count);
    }
    else if($breadth>$length){
        $breadth=$breadth-$length;
        $count++;
        return getcount($length,$breadth,$count);
    }
    else if ($breadth!=0){
        $count++; // there is no need to divide two same numbers, right?
    }
    return $count;
}