PHP를 사용하여 회계 시스템의 사용자 정의 필드 기능을 개발하는 방법 - 사용자 정의 필드 개발 가이드 제공

CREATE TABLE `records` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `amount` decimal(10,2) NOT NULL,
  `category` varchar(255) NOT NULL,
  `date` date NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

ALTER TABLE `records` ADD COLUMN `note` varchar(255) DEFAULT NULL AFTER `date`;

<?php
$dsn = "mysql:host=localhost;dbname=accounting";
$username = "root";
$password = "";

try {
    $pdo = new PDO($dsn, $username, $password);
    $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    
    $amount = 100.00;
    $category = "餐饮";
    $date = date("Y-m-d");
    $note = "午饭";
    
    $sql = "INSERT INTO `records` (`amount`, `category`, `date`, `note`) VALUES (?, ?, ?, ?)";
    $stmt = $pdo->prepare($sql);
    $stmt->execute([$amount, $category, $date, $note]);
    
    echo "记录插入成功！";
} catch(PDOException $e) {
    echo "Error: " . $e->getMessage();
}
?>

<form action="save_custom_field.php" method="post">
    <label for="field_name">字段名称:</label>
    <input type="text" name="field_name" id="field_name">
    <br>
    <label for="field_type">字段类型:</label>
    <select name="field_type" id="field_type">
        <option value="text">文本</option>
        <option value="number">数字</option>
        <option value="date">日期</option>
    </select>
    <br>
    <input type="submit" value="保存字段">
</form>

<?php
$sql = "SELECT * FROM `custom_fields`";
$stmt = $pdo->query($sql);

foreach ($stmt as $row) {
    echo "<form action='update_custom_field.php' method='post'>";
    echo "<input type='hidden' name='field_id' value='".$row['id']."'>";
    echo "<input type='text' name='field_name' value='".$row['name']."'>";
    echo "<select name='field_type'>";
    echo "<option value='text' ".($row['type']=='text'?'selected':'').">文本</option>";
    echo "<option value='number' ".($row['type']=='number'?'selected':'').">数字</option>";
    echo "<option value='date' ".($row['type']=='date'?'selected':'').">日期</option>";
    echo "</select>";
    echo "<input type='submit' value='保存'>";
    echo "<a href='delete_custom_field.php?id=".$row['id']."'>删除</a>";
    echo "</form>";
}
?>