<?php

//function sum($a, $b, $c)
function sum(…$numbers)
{
//return $a + $b + $c;
$total = 0;
foreach($numbers as $number){
$total += $number;
}
return $total;
}

echo sum(1,3,5) . PHP_EOL;
echo sum(4,2,5,1) . PHP_EOL;

<?php

$moreScores = [
55,
72,
‘perfect’,
[90, 42,88],
];

$scores = [
90,
40,
…$moreScores,
100,
];

//print_r($scores);

echo $scores[5][2] . PHP_EOL;

<?php

$scores = [
‘first’ => 90,
‘second’ => 40,
‘third’ => 100,
];

//foreach($scores as $value){
//foreach($scores as $score){
// echo $score . PHP_EOL;
//}

foreach($scores as $key => $score){
echo $key .’ – ‘. $score . PHP_EOL;
}

<?php

//$score1 = 90;
//$score2 = 40;
//$score3 = 100;

$scores = [
90,
40,
100
];

$scores[1] = 60;
echo $scores[1] . PHP_EOL;

<?php

declare(strict_types=1);

function showInfo(string $name, int $score): void
{
echo $name . ‘: ‘ . $score . PHP_EOL;
}

//showInfo(‘chodome’, 40);
//showInfo(‘chodome’, ‘gamegank’);
showInfo(‘chodome’, ‘4’);

<?php

function sum($a, $b, $c)
{
$total = $a + $b + $c;

//if($total < 0){
// return 0;
// }else{
// return $total;
// }
return $total < 0 ? 0 : $total;
}

echo sum(100,300,500) . PHP_EOL; //900
echo sum(-1000,300,500) . PHP_EOL; //0

<?php

function showAd()
{
echo ‘———-‘ . PHP_EOL;
echo ‘— Ad —‘ . PHP_EOL;
echo ‘———-‘ . PHP_EOL;
}

showAd();
echo ‘Tom is great!’ . PHP_EOL;
echo ‘Bob is great!’ . PHP_EOL;
showAd();
echo ‘Steve is great!’ . PHP_EOL;
echo ‘Bob is great!’ . PHP_EOL;
showAd();