在 PHP 中，處理復雜數據結構的常用方法是使用數組和對象

1. 創建一個包含多個數組的數組（二維數組）：

$students = [
    ['name' => 'Alice', 'age' => 20, 'major' => 'Computer Science'],
    ['name' => 'Bob', 'age' => 22, 'major' => 'Mathematics'],
    ['name' => 'Charlie', 'age' => 21, 'major' => 'Physics']
];

2. 遍歷這個二維數組并顯示每個學生的信息：

foreach ($students as $student) {
    echo "Name: " . $student['name'] . "<br>";
    echo "Age: " . $student['age'] . "<br>";
    echo "Major: " . $student['major'] . "<br><br>";
}

3. 使用對象表示數據結構。首先，創建一個表示學生的類：

class Student {
    public $name;
    public $age;
    public $major;

    public function __construct($name, $age, $major) {
        $this->name = $name;
        $this->age = $age;
        $this->major = $major;
    }

    public function display() {
        echo "Name: " . $this->name . "<br>";
        echo "Age: " . $this->age . "<br>";
        echo "Major: " . $this->major . "<br><br>";
    }
}

4. 創建一個包含多個學生對象的數組：

$students = [
    new Student('Alice', 20, 'Computer Science'),
    new Student('Bob', 22, 'Mathematics'),
    new Student('Charlie', 21, 'Physics')
];

5. 遍歷學生對象數組并調用每個對象的 display 方法：

foreach ($students as $student) {
    $student->display();
}

這些示例展示了如何使用 PHP 處理復雜數據結構并顯示其內容。你可以根據需要調整代碼以適應不同的數據結構和顯示需求。