phpcms 定义变量数组

<?php
// 定义一个索引数组
$fruits = array("Apple", "Banana", "Orange");

// 定义一个关联数组
$user = array(
    "name" => "John",
    "age" => 30,
    "city" => "New York"
);

// 定义一个多维数组
$matrix = array(
    array(1, 2, 3),
    array(4, 5, 6),
    array(7, 8, 9)
);

// 访问数组元素
echo $fruits[0]; // 输出 "Apple"
echo $user["name"]; // 输出 "John"
echo $matrix[1][2]; // 输出 "6"

// 遍历数组
foreach ($fruits as $fruit) {
    echo $fruit . "<br>";
}

foreach ($user as $key => $value) {
    echo $key . ": " . $value . "<br>";
}
?>

if (isset($array[$index])) {
    echo $array[$index];
} else {
    echo "Index out of bounds";
}

sort($array);
print_r($array);