foreach复选框以保留POST值

<?php
// 假设这是从数据库或其他来源获取的选项数组
$options = ['apple', 'banana', 'cherry', 'date'];

// 检查POST请求中是否有数据
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $selectedOptions = $_POST['options'] ?? [];
} else {
    $selectedOptions = [];
}
?>

<form method="post">
    <?php foreach ($options as $option): ?>
        <label>
            <input 
                type="checkbox" 
                name="options[]" 
                value="<?php echo htmlspecialchars($option); ?>" 
                <?php echo in_array($option, $selectedOptions) ? 'checked' : ''; ?>
            >
            <?php echo htmlspecialchars($option); ?>
        </label><br>
    <?php endforeach; ?>
    
    <button type="submit">Submit</button>
</form>