loops - for, foreach

<?php

// for loop to count down 10 to 3 and then say "Ready!", "Set!", "Go!".
for ($i =10; $i >=0; $i--){
  if ($i >=3){
    echo $i. "\n";
  }
  elseif ($i == 2){
    echo "Ready!" . "\n";
  }
  elseif ($i == 1){
    echo "Set!" . "\n";
  }
  elseif ($i == 0){
    echo "Go!";
  }
}

$scores = [
  "Alice" => 99,
  "Bob" => 95,
  "Charlie" => 98,
  "Destiny" => 91,
  "Edward" => 88
];

// foreach loop to print values only
foreach($scores as $s){
  echo "Someone received a score of $s." . "\n";
}
// foreach loop to print keys and values
foreach($scores as $name => $s){
  echo "$name received a score of $s." . "\n";
}