php 循环数组

<?php
$fruits = array("Apple", "Banana", "Cherry");

foreach ($fruits as $fruit) {
    echo $fruit . "<br>";
}
?>

<?php
$fruits = array("Apple", "Banana", "Cherry");
$count = count($fruits);

for ($i = 0; $i < $count; $i++) {
    echo $fruits[$i] . "<br>";
}
?>

<?php
$fruits = array("Apple", "Banana", "Cherry");
$count = count($fruits);

for ($i = 0; $i < $count; $i++) {
    if (isset($fruits[$i])) {
        echo $fruits[$i] . "<br>";
    }
}
?>

<?php
$fruits = array("Apple", "Banana", "Cherry");
$newFruits = [];

foreach ($fruits as $fruit) {
    $newFruits[] = strtoupper($fruit);
}

print_r($newFruits);
?>