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316 lines
8.8 KiB
316 lines
8.8 KiB
<?php
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namespace app\common\dm;
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class Dm
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{
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public $conn;
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public $database = 'STADIUM';
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public $sql;
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public function __construct($dm = [])
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{
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# 获取配置数据
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if (empty($dm)) {
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$database = config('database');
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$dm = $database['connections']['dm'];
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}
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# 模式名称
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$this->database = $dm['database'];
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# 连接达梦数据库
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$this->conn = dm_connect($dm['hostname'].':'.$dm['hostport'], $dm['username'], $dm['password']);
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if (!$this->conn) {
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die('连接数据库失败！');
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}
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}
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/**
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* 拼接达梦查询数据表名
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* @param string $tableName // 表名
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* @return string
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*/
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protected function splitTableName($tableName) {
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if (strpos($tableName,$this->database) !== false) return $tableName;
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return '"' . $this->database . '"."' . $tableName .'"';
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}
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/**
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* 创建数据
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* @param string $table // 创建数据表名
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* @param array $data // 创建数据
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* @return mixed
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*/
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public function insert($table, $data)
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{
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$fields = '"' . implode('","', array_keys($data)) . '"';
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$values = "'" . implode("','", array_values($data)) . "'";
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$tableName = $this->splitTableName($table);
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$sql = 'INSERT INTO '.$tableName.'('.$fields.') VALUES ('.$values.')';
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$res = dm_exec($this->conn, $sql);
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$this->sql = $sql;
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dm_free_result($res);
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return $res;
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}
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/**
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* 更新数据
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* @param string $table // 更新数据表名
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* @param array $data // 更新数据
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* @param string|array $where // 更新数据条件
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* @return mixed
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*/
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public function update($table, $data, $where)
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{
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$set = array();
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foreach ($data as $key => $value) {
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$set[] = '"'.$key.'"' . '=' . "'{$value}'";
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}
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$tableName = $this->splitTableName($table);
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$sql = 'UPDATE '.$tableName." SET " . implode(",", $set) . ' WHERE '.$this->where($where);
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$res = dm_exec($this->conn, $sql);
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$this->sql = $sql;
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dm_free_result($res);
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return $res;
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}
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/**
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* 删除数据
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* @param string $table // 删除数据表名
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* @param string $where // 删除数据条件
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* @return mixed
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*/
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public function delete($table, $where)
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{
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$tableName = $this->splitTableName($table);
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$sql = 'DELETE FROM '.$tableName.' WHERE '.$this->where($where);
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$result = dm_exec($this->conn, $sql);
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$this->sql = $sql;
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dm_free_result($result);
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return $result;
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}
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/**
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* 清空表
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* @param string $table // 清空表名
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* @return mixed
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*/
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public function truncate($table)
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{
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$tableName = $this->splitTableName($table);
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$sql = 'truncate table '.$tableName;
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$result = dm_exec($this->conn, $sql);
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$this->sql = $sql;
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dm_free_result($result);
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return $result;
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}
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/**
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* 查询多条数据
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* @param string $table // 查询表名
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* @param string $where // 查询条件
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* @param string $fields // 查询字段
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* @param string $order // 查询排序
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* @param string $limit // 查询条数
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* @param string $group // 查询分组
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* @return array // 返回数组
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*/
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public function select($table, $where = null, $fields = '*', $order = null, $limit = null, $group = null)
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{
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$tableName = $this->splitTableName($table);
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$sql = 'SELECT '.$fields.' FROM '.$tableName;
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if ($where != null) {
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$sql .= ' WHERE '.$this->where($where);
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}
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if ($group != null) {
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$sql .= ' GROUP BY '.$group;
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}
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if ($order != null) {
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$sql .= ' ORDER BY '.$order;
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}
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if ($limit != null) {
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$sql .= ' LIMIT '.$limit;
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}
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$result = dm_exec($this->conn, $sql);
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$this->sql = $sql;
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$data = array();
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while ($row = dm_fetch_array($result)) {
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$data[] = $row;
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}
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dm_free_result($result);
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return $data;
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}
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/**
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* 查询单条数据
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* @param string $table // 查询表名
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* @param string $where // 查询条件
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* @param string $fields // 查询字段
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* @param string $order // 查询排序
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* @return array // 返回数组
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*/
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public function find($table, $where = null, $fields = '*', $order = null)
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{
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$tableName = $this->splitTableName($table);
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$sql = 'SELECT '.$fields.' FROM '.$tableName;
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if ($where != null) {
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$sql .= ' WHERE '.$this->where($where);
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}
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if ($order != null) {
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$sql .= ' ORDER BY '.$order;
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}
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$sql .= ' LIMIT 1';
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$result = dm_exec($this->conn, $sql);
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$this->sql = $sql;
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$data = array();
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while ($row = dm_fetch_array($result)) {
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$data = $row;
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}
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dm_free_result($result);
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return $data;
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}
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/**
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* WHERE 条件组合
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* @param $where
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* @param $glue
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* @return string
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*/
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protected function where($where,$glue = 'AND')
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{
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$where = [$where];
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$where_conditions = [];
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$allow_operator = array('>', '<', '<>', '!=', '>=', '<=', '+=', '-=');
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foreach ($where as $condition) {
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if (is_string($condition)) {
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$where_conditions[] = $condition;
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} elseif (is_array($condition)) {
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foreach ($condition as $column_name => $value) {
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if ($value === null) {
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$where_conditions[] = '"'.$column_name.'"' . ' IS NULL';
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} elseif (is_array($value)) {
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$comparator = $value[0];
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if (in_array($comparator,$allow_operator)) {
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# 比较符查询 示例 $condition = ['field' => ['comparator','value']]
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$where_conditions[] = '"'.$column_name.'"' . " {$comparator} '" . addslashes($value[1]) . "'";
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} else {
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# “IN”查询 示例： $condition = ['field' => ['value1','value2']];
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$in_values = implode(",", array_map(function($val) {
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return "'" . addslashes($val) . "'";
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}, $value));
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$where_conditions[] = '"'.$column_name.'"' . ' IN (' . $in_values . ')';
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}
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} elseif (is_string($value) && strpos($value, '%') !== false) {
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# “LIKE”查询 示例：$condition = ['field' => '%value%'];
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$where_conditions[] = '"'.$column_name.'"' . " LIKE '" . addslashes($value) . "'";
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} else {
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# 默认“=”查询
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$where_conditions[] = '"'.$column_name.'"' . " = '" . addslashes($value) . "'";
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}
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}
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}
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}
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return implode(" {$glue} ",$where_conditions);
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}
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/**
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* 查询数据总数
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* @param string $table // 查询表名
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* @param string $where // 查询条件
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* @return array // 返回数组
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*/
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public function count($table, $where = null)
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{
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$tableName = $this->splitTableName($table);
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$sql = 'SELECT COUNT(*) as count FROM '.$tableName;
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if ($where != null) {
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$sql .= ' WHERE '.$this->where($where);
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}
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$result = dm_exec($this->conn, $sql);
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$this->sql = $sql;
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$count = 0;
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while ($row = dm_fetch_array($result)) {
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$count = $row['COUNT'];
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}
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dm_free_result($result);
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return $count;
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}
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/**
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* 获取上次执行数据Sql
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* @return mixed
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*/
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public function getLastSql()
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{
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return $this->sql;
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}
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/**
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* @param $table
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* @param $where
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* @param $fields
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* @param $order
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* @param $limit
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* @param $page
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* @return array
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*/
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public function getPaginate($table, $where = null, $fields = '*', $order = null, $limit = 10, $page = 1)
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{
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# 查询条数
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$pageLimit = ($page - 1) * $limit;
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# 总数
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$total = $this->count($table);
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# 数据
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$list = $this->select($table,$where,$fields,$order,$pageLimit.','.$limit);
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# 计算总页数
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$totalPages = ceil($total / $limit);
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# 组合分页按钮
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$pageData = $totalPages >= 2 ? get_paginate($totalPages,$page,'/?s=/admin/pass.pass/index') : '';
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return [
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'list' => $list ?: [],
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'pageData' => $pageData,
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];
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}
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}
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