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@@ -0,0 +1,507 @@
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+<?php
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+
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+
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+class DBPDO
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+{
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+ protected static $_instance = null;
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+ protected $dbName = '';
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+ protected $dsn;
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+ protected $dbh;
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+
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+ /**
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+ * 构造
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+ *
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+ * @return DBPDO
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+ */
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+ private function __construct($config)
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+ {
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+ try {
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+ $this->dsn = "mysql:host=" . $config['dbhost'] . ";dbname=" . $config['dbname'] . ";port=" . $config['dbport'] . ";charset=" . $config['charset'];
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+ // $this->dsn = 'mysql:host=127.0.0.1;dbname=dbname;port=3306';
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+ $this->dbh = new PDO($this->dsn, $config['dbuser'], $config['dbpass']);
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+ $this->dbh->exec('SET character_set_connection=' . $config['charset'] . ', character_set_results=' . $config['charset'] . ', character_set_client=binary');
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+ } catch (PDOException $e) {
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+ $this->outputError($e->getMessage());
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+ }
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+ }
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+
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+ /**
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+ * 防止克隆
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+ *
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+ */
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+ private function __clone()
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+ { }
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+
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+ /**
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+ * Singleton instance
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+ *
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+ * @return Object
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+ */
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+ public static function getInstance($dbConf)
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+ {
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+ if (self::$_instance === null) {
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+ self::$_instance = new self($dbConf);
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+ }
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+ return self::$_instance;
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+ }
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+
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+ /**
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+ * Query
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+ *
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+ * @param String $strSql SQL语句
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+ * @param String $queryMode 查询方式(All or Row)
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+ * @param Boolean $debug
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+ * @return Array
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+ */
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+ public function query($strSql, $queryMode = 'All', $debug = false)
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+ {
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+ if ($debug === true) $this->debug($strSql);
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+ $recordset = $this->dbh->query($strSql);
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+ $this->getPDOError();
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+ if ($recordset) {
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+ $recordset->setFetchMode(PDO::FETCH_ASSOC);
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+ if ($queryMode == 'All') {
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+ $result = $recordset->fetchAll();
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+ } elseif ($queryMode == 'Row') {
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+ $result = $recordset->fetch();
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+ }
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+ } else {
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+ $result = null;
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+ }
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+ return $result;
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+ }
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+
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+ /** select: Query all records
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+ *
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+ * @param string $sql sql语句
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+ * @param Array $where 查询条件
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+ * @return $res;
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+ **/
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+ public function select($sql, $where = '')
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+ {
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+ $stmt = $this->dbh->prepare($sql);
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+ if ($where) {
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+ $stmt->execute($where);
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+ } else {
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+ $stmt->execute();
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+ }
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+ return $stmt->fetchAll(PDO::FETCH_ASSOC);
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+ }
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+
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+ /** select all records width AND condition
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+ *
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+ * @param String $table tableName
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+ * @param Array $data ["key_a" => "1111", "key_b" => "2222"]
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+ * @return Array;
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+ **/
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+ public function select_and($table, $data = '')
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+ {
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+ if ($data) {
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+ $where_string = [];
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+ $where_array = [];
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+ foreach ($data as $key => $value) {
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+ $where_string[] = "`$key` = ?";
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+ $where_array[] = $value;
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+ }
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+ $where_string = implode(' AND ', $where_string);
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+ $sql = "SELECT * FROM `$table` WHERE $where_string";
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+ return $this->select($sql, $where_array);
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+ } else {
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+ return $this->select("SELECT * FROM `$table`");
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+ }
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+ }
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+
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+ /** find: Query a single record
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+ *
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+ * @param string $sql sql语句
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+ * @param Array $where 查询条件
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+ * @return $res;
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+ **/
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+ public function find($sql, $where = [])
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+ {
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+ $stmt = $this->dbh->prepare($sql);
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+ if ($where) {
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+ $stmt->execute($where);
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+ } else {
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+ $stmt->execute();
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+ }
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+ return $stmt->fetch(PDO::FETCH_ASSOC);
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+ }
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+
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+ /** find records width width AND condition
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+ *
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+ * @param String $table tableName
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+ * @param Array $data ["key_a" => "1111", "key_b" => "2222"]
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+ * @return Array;
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+ **/
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+ public function find_and($table, $data = [])
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+ {
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+ if ($data) {
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+ $where_string = [];
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+ $where_array = [];
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+ foreach ($data as $key => $value) {
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+ $where_string[] = "`$key` = ?";
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+ $where_array[] = $value;
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+ }
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+ $where_string = implode(' AND ', $where_string);
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+ $sql = "SELECT * FROM `$table` WHERE $where_string";
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+ return $this->find($sql, $where_array);
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+ } else {
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+ return $this->find("SELECT * FROM `$table`");
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+ }
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+ }
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+
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+ /**
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+ * del 执行删除操作
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+ * @param string $sql sql语句
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+ * @param Array $where 查询条件
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+ * @return $res;
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+ **/
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+ public function del($sql, $where = '')
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+ {
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+ $stmt = $this->dbh->prepare($sql);
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+ if ($where) {
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+ $stmt->execute($where);
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+ $res = $stmt->rowCount();
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+ } else {
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+ $res = false;
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+ }
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+ return $res;
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+ }
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+
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+ /**
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+ * add 新增记录
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+ * @param String $table 表名
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+ * @param String $sql sql语句
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+ * @param Array $data 新增内容
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+ * @return $res;
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+ **/
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+ public function add($table, $data = '')
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+ {
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+
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+ $this->checkFields($table, $data);
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+ $sql = "INSERT INTO `$table` (" . implode(',', array_keys($data)) . ") VALUES (:" . implode(',:', array_keys($data)) . ")";
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+ $stmt = $this->dbh->prepare($sql); // 预处理语句
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+ $ret = $stmt->execute($data); // 新增的数据
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+ $id = $this->dbh->lastInsertId(); // 新增的id
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+ if ($ret) {
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+ $res = $id;
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+ } else {
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+ $res = false;
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+ }
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+ return $res;
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+ }
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+
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+ /**
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+ * save 修改记录
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+ * @param string $sql sql语句
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+ * @param Array $data
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+ * @return $res;
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+ **/
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+ public function save($table, $data = '', $where = '')
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+ {
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+
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+ $this->checkFields($table, $data);
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+ if ($where) {
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+ $strSql = '';
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+ foreach ($data as $key => $value) {
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+ $strSql .= ",$key=:$key";
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+ }
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+ $strSql = substr($strSql, 1);
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+ $strSql = "UPDATE `$table` SET $strSql WHERE $where";
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+ } else {
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+ $strSql = '';
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+ foreach ($data as $key => $value) {
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+ $strSql .= ",$key=:$key";
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+ }
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+ $strSql = substr($strSql, 1);
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+ $strSql = "UPDATE `$table` SET $strSql ";
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+ }
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+ // if ($debug === true) $this->debug($strSql);
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+
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+ $stmt = $this->dbh->prepare($strSql); //预处理语句
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+ $stmt->execute($data); //修改的数据
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+ $ret = $stmt->rowCount(); //获取影响行数
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+ if ($ret > 0) {
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+ $res = true;
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+ } else {
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+ $res = false;
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+ }
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+ return $res;
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+ }
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+
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+ /**
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+ * Update 更新
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+ *
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+ * @param String $table 表名
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+ * @param Array $arrayDataValue 字段与值
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+ * @param String $where 条件
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+ * @param Boolean $debug
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+ * @return Int
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+ */
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+ public function update($table, $arrayDataValue, $where = '', $debug = false)
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+ {
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+ $this->checkFields($table, $arrayDataValue);
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+ if ($where) {
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+ $strSql = '';
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+ foreach ($arrayDataValue as $key => $value) {
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+ $strSql .= ", `$key`='$value'";
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+ }
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+ $strSql = substr($strSql, 1);
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+ $strSql = "UPDATE `$table` SET $strSql WHERE $where";
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+ } else {
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+ $strSql = "REPLACE INTO `$table` (`" . implode('`,`', array_keys($arrayDataValue)) . "`) VALUES ('" . implode("','", $arrayDataValue) . "')";
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+ }
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+ if ($debug === true) $this->debug($strSql);
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+ $result = $this->dbh->exec($strSql);
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+ $this->getPDOError();
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+ return $result;
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+ }
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+
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+ /**
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+ * Insert 插入
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+ *
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+ * @param String $table 表名
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+ * @param Array $arrayDataValue 字段与值
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+ * @param Boolean $debug
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+ * @return Int
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+ */
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+ public function insert($table, $arrayDataValue, $debug = false)
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+ {
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+ $this->checkFields($table, $arrayDataValue);
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+ $strSql = "INSERT INTO `$table` (`" . implode('`,`', array_keys($arrayDataValue)) . "`) VALUES ('" . implode("','", $arrayDataValue) . "')";
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+ if ($debug === true) $this->debug($strSql);
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+ $result = $this->dbh->exec($strSql);
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+ $this->getPDOError();
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+ return $result;
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+ }
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+
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+ /**
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+ * Replace 覆盖方式插入
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+ *
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+ * @param String $table 表名
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+ * @param Array $arrayDataValue 字段与值
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+ * @param Boolean $debug
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+ * @return Int
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+ */
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+ public function replace($table, $arrayDataValue, $debug = false)
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+ {
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+ $this->checkFields($table, $arrayDataValue);
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+ $strSql = "REPLACE INTO `$table`(`" . implode('`,`', array_keys($arrayDataValue)) . "`) VALUES ('" . implode("','", $arrayDataValue) . "')";
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+ if ($debug === true) $this->debug($strSql);
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+ $result = $this->dbh->exec($strSql);
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+ $this->getPDOError();
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+ return $result;
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+ }
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+
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+ /**
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+ * Delete 删除
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+ *
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+ * @param String $table 表名
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+ * @param String $where 条件
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+ * @param Boolean $debug
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+ * @return Int
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+ */
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+ public function delete($table, $where = '', $debug = false)
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+ {
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+ if ($where == '') {
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+ $this->outputError("'WHERE' is Null");
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+ } else {
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+ $strSql = "DELETE FROM `$table` WHERE $where";
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+ if ($debug === true) $this->debug($strSql);
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+ $result = $this->dbh->exec($strSql);
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+ $this->getPDOError();
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+ return $result;
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+ }
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+ }
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+
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+ /**
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+ * execSql 执行SQL语句
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+ *
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+ * @param String $strSql
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+ * @param Boolean $debug
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+ * @return Int
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+ */
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+ public function execSql($strSql, $debug = false)
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+ {
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+ if ($debug === true) $this->debug($strSql);
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+ $result = $this->dbh->exec($strSql);
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+ $this->getPDOError();
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+ return $result;
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+ }
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+
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+ /**
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+ * 获取字段最大值
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+ *
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+ * @param string $table 表名
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+ * @param string $field_name 字段名
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+ * @param string $where 条件
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+ */
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+ public function getMaxValue($table, $field_name, $where = '', $debug = false)
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+ {
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+ $strSql = "SELECT MAX(" . $field_name . ") AS MAX_VALUE FROM $table";
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+ if ($where != '') $strSql .= " WHERE $where";
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+ if ($debug === true) $this->debug($strSql);
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+ $arrTemp = $this->query($strSql, 'Row');
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+ $maxValue = $arrTemp["MAX_VALUE"];
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+ if ($maxValue == "" || $maxValue == null) {
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+ $maxValue = 0;
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+ }
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+ return $maxValue;
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+ }
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+
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+ /**
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+ * 获取指定列的数量
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+ *
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+ * @param string $table
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+ * @param string $field_name
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+ * @param string $where
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+ * @param bool $debug
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+ * @return int
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+ */
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+ public function getCount($table, $field_name, $where = '', $debug = false)
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+ {
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+ $strSql = "SELECT COUNT($field_name) AS NUM FROM $table";
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+ if ($where != '') $strSql .= " WHERE $where";
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+ if ($debug === true) $this->debug($strSql);
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+ $arrTemp = $this->query($strSql, 'Row');
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+ return $arrTemp['NUM'];
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+ }
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+
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+ /**
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+ * 获取表引擎
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+ *
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+ * @param String $dbName 库名
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+ * @param String $tableName 表名
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+ * @param Boolean $debug
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+ * @return String
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+ */
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+ public function getTableEngine($dbName, $tableName)
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+ {
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+ $strSql = "SHOW TABLE STATUS FROM $dbName WHERE Name='" . $tableName . "'";
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+ $arrayTableInfo = $this->query($strSql);
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+ $this->getPDOError();
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+ return $arrayTableInfo[0]['Engine'];
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+ }
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+ /**
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+ * beginTransaction 事务开始
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+ */
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+ public function beginTransaction()
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+ {
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+ $this->dbh->beginTransaction();
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+ }
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+
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+ /**
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+ * commit 事务提交
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+ */
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+ public function commit()
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+ {
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+ $this->dbh->commit();
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+ }
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+
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+ /**
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+ * rollback 事务回滚
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+ */
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+ public function rollback()
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+ {
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+ $this->dbh->rollback();
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+ }
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+
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+ /**
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+ * transaction 通过事务处理多条SQL语句
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+ * 调用前需通过getTableEngine判断表引擎是否支持事务
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+ *
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+ * @param array $arraySql
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+ * @return Boolean
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+ */
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+ public function execTransaction($arraySql)
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+ {
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+ $retval = 1;
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+ $this->beginTransaction();
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+ foreach ($arraySql as $strSql) {
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+ if ($this->execSql($strSql) == 0) $retval = 0;
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+ }
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+ if ($retval == 0) {
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+ $this->rollback();
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+ return false;
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+ } else {
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+ $this->commit();
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * checkFields 检查指定字段是否在指定数据表中存在
|
|
|
+ *
|
|
|
+ * @param String $table
|
|
|
+ * @param array $arrayField
|
|
|
+ */
|
|
|
+ private function checkFields($table, $arrayFields)
|
|
|
+ {
|
|
|
+ $fields = $this->getFields($table);
|
|
|
+ foreach ($arrayFields as $key => $value) {
|
|
|
+ if (!in_array($key, $fields)) {
|
|
|
+ $this->outputError("Unknown column `$key` in field list.");
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * getFields 获取指定数据表中的全部字段名
|
|
|
+ *
|
|
|
+ * @param String $table 表名
|
|
|
+ * @return array
|
|
|
+ */
|
|
|
+ private function getFields($table)
|
|
|
+ {
|
|
|
+ $fields = array();
|
|
|
+ $recordset = $this->dbh->query("SHOW COLUMNS FROM $table");
|
|
|
+ $this->getPDOError();
|
|
|
+ $recordset->setFetchMode(PDO::FETCH_ASSOC);
|
|
|
+ $result = $recordset->fetchAll();
|
|
|
+ foreach ($result as $rows) {
|
|
|
+ $fields[] = $rows['Field'];
|
|
|
+ }
|
|
|
+ return $fields;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * getPDOError 捕获PDO错误信息
|
|
|
+ */
|
|
|
+ private function getPDOError()
|
|
|
+ {
|
|
|
+ if ($this->dbh->errorCode() != '00000') {
|
|
|
+ $arrayError = $this->dbh->errorInfo();
|
|
|
+ $this->outputError($arrayError[2]);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * debug
|
|
|
+ *
|
|
|
+ * @param mixed $debuginfo
|
|
|
+ */
|
|
|
+ private function debug($debuginfo)
|
|
|
+ {
|
|
|
+ var_dump($debuginfo);
|
|
|
+ exit();
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 输出错误信息
|
|
|
+ *
|
|
|
+ * @param String $strErrMsg
|
|
|
+ */
|
|
|
+ private function outputError($strErrMsg)
|
|
|
+ {
|
|
|
+ throw new Exception('MySQL Error: ' . $strErrMsg);
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * destruct 关闭数据库连接
|
|
|
+ */
|
|
|
+ public function destruct()
|
|
|
+ {
|
|
|
+ $this->dbh = null;
|
|
|
+ }
|
|
|
+}
|
doudoudzj