初始化

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2026-08-08 18:28:49 +08:00
parent 9bef4420e0
commit f082037a6e
854 changed files with 217171 additions and 11 deletions
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<?php
namespace core\base;
/**
* 模型基类 - 修复版
*/
class Model
{
protected $table = '';
protected $pdo = null;
protected $where = array();
protected $params = array();
protected $order = '';
protected $limit = '';
protected $fields = '*';
protected $lastError = '';
/** 表前缀,统一为 DGZXY_ */
const TABLE_PREFIX = 'DGZXY_';
public function __construct()
{
$this->pdo = \core\db\Db::pdo();
}
/**
* 获取带前缀的完整表名
*/
public function getTable()
{
// 如果已包含前缀则不重复添加
if (strpos($this->table, self::TABLE_PREFIX) === 0) {
return $this->table;
}
return self::TABLE_PREFIX . $this->table;
}
// 设置表名(外部调用 table() 时传入不带前缀的原始表名)
public function table($table)
{
$this->table = $table;
return $this;
}
// 设置查询字段
public function field($fields)
{
$this->fields = $fields;
return $this;
}
// 设置 WHERE 条件
public function where($where = null, $params = array())
{
if ($where !== null) {
$this->where = $where;
$this->params = $params;
}
return $this;
}
// 设置排序 - 修复版
public function order($order)
{
if (is_array($order)) {
// 支持两种格式:
// 1. ['id DESC'] -> "id DESC"
// 2. ['id' => 'DESC'] -> "id DESC"
$parts = [];
foreach ($order as $key => $value) {
if (is_numeric($key)) {
// 格式:['id DESC']
$parts[] = $value;
} else {
// 格式:['id' => 'DESC']
$parts[] = $key . ' ' . $value;
}
}
$this->order = implode(', ', $parts);
} else {
// 字符串格式:'id DESC'
$this->order = $order;
}
return $this;
}
// 设置 LIMIT
public function limit($limit)
{
$this->limit = $limit;
return $this;
}
// 获取单条记录
public function fetch()
{
$sql = $this->buildSelect();
$stmt = $this->pdo->prepare($sql);
$stmt->execute($this->params);
return $stmt->fetch();
}
// 获取所有记录
public function fetchAll()
{
$sql = $this->buildSelect();
$stmt = $this->pdo->prepare($sql);
$stmt->execute($this->params);
return $stmt->fetchAll();
}
// 构建 SELECT 语句
protected function buildSelect()
{
$sql = 'SELECT ' . $this->fields . ' FROM ' . $this->getTable();
if (!empty($this->where)) {
if (is_string($this->where)) {
$sql .= ' WHERE ' . $this->where;
} else if (is_array($this->where)) {
$sql .= ' WHERE ' . implode(' AND ', $this->where);
}
}
if (!empty($this->order)) {
$sql .= ' ORDER BY ' . $this->order;
}
if ($this->limit) {
$sql .= ' LIMIT ' . $this->limit;
}
return $sql;
}
// 获取最后错误信息
public function getError()
{
return $this->lastError;
}
// 添加记录
public function add($data)
{
$fields = implode(', ', array_keys($data));
$placeholders = ':' . implode(', :', array_keys($data));
$sql = 'INSERT INTO ' . $this->getTable() . ' (' . $fields . ') VALUES (' . $placeholders . ')';
$stmt = $this->pdo->prepare($sql);
$result = $stmt->execute($data);
if ($result === false) {
$err = $stmt->errorInfo();
$this->lastError = isset($err[2]) ? $err[2] : 'Unknown error';
}
return $result;
}
// 更新记录
public function update($data)
{
$set = array();
$params = array();
foreach ($data as $key => $value) {
$set[] = $key . ' = :' . $key;
$params[':' . $key] = $value;
}
$sql = 'UPDATE ' . $this->getTable() . ' SET ' . implode(', ', $set);
if (!empty($this->where)) {
if (is_string($this->where)) {
$sql .= ' WHERE ' . $this->where;
} else if (is_array($this->where)) {
$sql .= ' WHERE ' . implode(' AND ', $this->where);
}
}
// 合并 WHERE 参数
foreach ($this->params as $key => $value) {
$params[$key] = $value;
}
$stmt = $this->pdo->prepare($sql);
return $stmt->execute($params);
}
// 删除记录(按 id
public function delete($id)
{
$sql = 'DELETE FROM ' . $this->getTable() . ' WHERE id = :id';
$stmt = $this->pdo->prepare($sql);
return $stmt->execute(array(':id' => $id));
}
// 按 where 条件删除记录
public function deleteWhere()
{
if (empty($this->where)) {
return false;
}
$sql = 'DELETE FROM ' . $this->getTable();
if (is_string($this->where)) {
$sql .= ' WHERE ' . $this->where;
} else if (is_array($this->where)) {
$sql .= ' WHERE ' . implode(' AND ', $this->where);
}
$stmt = $this->pdo->prepare($sql);
$result = $stmt->execute($this->params);
// 清除 where 条件
$this->where = array();
$this->params = array();
return $result;
}
// 执行原生 SQL
public function query($sql, $params = array())
{
$stmt = $this->pdo->prepare($sql);
$stmt->execute($params);
$rows = $stmt->fetchAll();
// 释放结果集游标,避免复用同一 PDO 连接时触发 2014 错误
$stmt->closeCursor();
return $rows;
}
// 执行原生 SQL(无返回)
public function execute($sql, $params = array())
{
$stmt = $this->pdo->prepare($sql);
return $stmt->execute($params);
}
}