better way to write this program so that it consumes minimum time to execute

Question

I want the same result with less execution time. Is there any better way to write the code so that I can get the same result with minimum execution time.

<?php
     $input1 = 5;
     $input2 = 1;
     $input3 = [9, 5, 10];

    $numberOfWalls = count($input3);
    $numberOfJumps = 0;

    for($i=0; $i<$numberOfWalls; $i++){
        if($input1 >= $input3[$i]){
            $numberOfJumps += 1;
        }else {
            $tot = 0;
            while(1){
                if($tot + $input1 < $input3[$i]){
                    $tot = $tot + ($input1 - $input2);
                    $numberOfJumps += 1;
                }else{
                    $tot = $tot + $input1;
                    $numberOfJumps += 1;
                    break;
                }
            }
        }
    }
    echo $numberOfJumps;

Answer 1

How about this:

// input
$forwards  = 5;
$backwards = 1;
$walls     = [9, 5, 10];
// computation
$oneJump   = $forwards-$backwards;
$jumps     = 0;
foreach ($walls as $wall) $jumps += ceil(($wall-$backwards)/$oneJump);
// output
echo "Jumps needed = $jumps";