sorting array value without using built in php like sort() etc

Answer 1

//Best solution for bubble sort
$a = [10,5,2,8,7];
$k = 0;//I used this variable because i want to show you how many times my for loop needs to iterate maximum.
for($i = 0;$i < count($a); $i++){
    for($j = 1; $j < count($a) - $i; $j++){
        if($a[$j -1 ] > $a[$j]){
            $temp = $a[$j];
            $a[$j] = $a[$j -1];
            $a[$j - 1] = $temp;
        }
        $k++;
    }

}
echo $k;
echo '
';
print_r($a);
echo '
';