Find out the largest and smallest value in an array without using array function: using loop | Learning Curve- Perfect Tutorial for the beginers

$myArray=array(4,5,88,43,7,100,1);
$lengthofarray=count($myArray);

$guess_largest=0;
$guess_smallest=$myArray[0];


for($i=0;$i< $lengthofarray;$i++)
{
if($myArray[$i]>$guess_largest)
$guess_largest=$myArray[$i];
if($myArray[$i]<$guess_smallest)
$guess_smallest=$myArray[$i];
}
echo "Largest value: ".$guess_largest;
echo "<br>";
echo "Smallest Value: ".$guess_smallest;

//ouput as below

//Largest value: 100
//Smallest Value: 1

$myArray=array(4,5,88,43,7,100,1);

$lengthofarray=count($myArray);

$guess_largest=0;

$guess_smallest=$myArray[0];

for($i=0;$i< $lengthofarray;$i++)

{

if($myArray[$i]>$guess_largest)

$guess_largest=$myArray[$i];

if($myArray[$i]<$guess_smallest)

$guess_smallest=$myArray[$i];

}

echo "Largest value: ".$guess_largest;

echo "<br>";

echo "Smallest Value: ".$guess_smallest;

//ouput as below

//Largest value: 100

//Smallest Value: 1