打印php多维数组的键和值

function printArray($array, $indent = "") {
    foreach ($array as $key => $value) {
        if (is_array($value)) {
            echo $indent . $key . ":\n";
            printArray($value, $indent . "  ");
        } else {
            echo $indent . $key . ": " . $value . "\n";
        }
    }
}

// 示例多维数组
$myArray = array(
    "name" => "John",
    "age" => 30,
    "email" => "john@example.com",
    "skills" => array(
        "frontend" => array("HTML", "CSS", "JavaScript"),
        "backend" => array("PHP", "MySQL"),
        "testing" => array("PHPUnit", "Selenium")
    )
);

printArray($myArray);

name: John
age: 30
email: john@example.com
skills:
  frontend:
    0: HTML
    1: CSS
    2: JavaScript
  backend:
    0: PHP
    1: MySQL
  testing:
    0: PHPUnit
    1: Selenium