以下是一个简单的PHP实例，用于计算员工的绩效。在这个例子中，我们将使用一个数组来存储员工的工作小时数和奖金系数，然后计算每个员工的绩效得分。
```php
// 员工数据
$employees = [
'John' => ['hours' => 160, 'bonus_coefficient' => 1.2],
'Jane' => ['hours' => 180, 'bonus_coefficient' => 1.1],
'Mike' => ['hours' => 150, 'bonus_coefficient' => 1.3],
'Sarah' => ['hours' => 170, 'bonus_coefficient' => 1.0]
];
// 计算绩效得分
foreach ($employees as $name => $data) {
$performance_score = $data['hours'] * $data['bonus_coefficient'];
$employees[$name]['performance_score'] = $performance_score;
}
// 输出绩效得分
echo "
