php的mysql类解决办法
内容摘要
这篇文章主要为大家详细介绍了php的mysql类简单示例,具有一定的参考价值,可以用来参考一下。
对php mysql类简单示例对此感兴趣的朋友,看看idc笔记做的技术笔记!
/**
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对php mysql类简单示例对此感兴趣的朋友,看看idc笔记做的技术笔记!
/**
*
* @
文章正文
这篇文章主要为大家详细介绍了php的mysql类简单示例,具有一定的参考价值,可以用来参考一下。
对php mysql类简单示例对此感兴趣的朋友,看看idc笔记做的技术笔记!
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':' . $this ->db_mysql_port; $this ->conn = mysql_connect( $server , $this ->db_mysql_username, $this ->db_mysql_password,true) or die ( 'Connect MySQL DB error!' ); mysql_select_db( $this ->db_mysql_database, $this ->conn) or die ( 'select db error!' ); mysql_query( "set names " . $this ->db_mysql_charset, $this ->conn); } /** +---------------------------------------------------------- * 设置数据对象值 +---------------------------------------------------------- * @access public +---------------------------------------------------------- *table,where,order,limit,data,field,join,group,having +---------------------------------------------------------- */ public function table( $table ){ $this ->query_list[ 'table' ] = $table ; return $this ; } public function where( $where ){ $this ->query_list[ 'where' ] = $where ; return $this ; } public function order( $order ){ $this ->query_list[ 'order' ] = $order ; return $this ; } public function limit( $offset , $length ){ if (!isset( $length )){ $length = $offset ; $offset = 0; } $this ->query_list[ 'limit' ] = 'limit ' . $offset . ',' . $length ; return $this ; } public function data( $data ){ /* if(is_object($data)){ $data = get_object_vars($data); }elseif (is_string($data)){ parse_str($data,$data); }elseif(!is_array($data)){ //Log:DATA_TYPE_INVALID } */ $this ->query_list[ 'data' ] = $data ; return $this ; } public function field( $fields ){ $this ->query_list[ 'fields' ] = $fields ; return $this ; } public function join( $join ){ $this ->query_list[ 'join' ] = $join ; return $this ; } public function group( $group ){ $this ->query_list[ 'group' ] = $group ; return $this ; } public function having( $having ){ $this ->query_list[ 'having' ] = $having ; return $this ; } /** +---------------------------------------------------------- * 查询 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @param +---------------------------------------------------------- */ public function select(){ $select_sql = 'select ' ; $fields = isset( $this ->query_list[ 'fields' ])? $this ->query_list[ 'fields' ]: '*' ; $select_sql .= $fields ; $select_sql .= ' from `' . $this ->query_list[ 'table' ]. '` ' ; isset( $this ->query_list[ 'join' ])?( $select_sql .= $this ->query_list[ 'join' ]): '' ; isset( $this ->query_list[ 'where' ])?( $select_sql .= ' where ' . $this ->query_list[ 'where' ]): '' ; isset( $this ->query_list[ 'group' ])?( $select_sql .= ' group by' . $this ->query_list[ 'group' ]): '' ; isset( $this ->query_list[ 'having' ])?( $select_sql .= ' mysql having ' . $this ->query_list[ 'having' ]): '' ; isset( $this ->query_list[ 'order' ])?( $select_sql .= ' order by ' . $this ->query_list[ 'order' ]): '' ; isset( $this ->query_list[ 'limit' ])?( $select_sql .= ' ' . $this ->query_list[ 'limit' ]): '' ; return $this ->query( $select_sql ); } /** +---------------------------------------------------------- * 增加 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @param +---------------------------------------------------------- */ public function add(){ $add_sql = 'insert into `' . $this ->query_list[ 'table' ]. '` (' ; $data = $this ->query_list[ 'data' ]; $value = $field = '' ; foreach ( $data as $k => $v ){ $field .= '`' . $k . '`,' ; if ( is_numeric ( $v )) $value .= $v . ',' ; else $value .= '\'' . $v . '\',' ; } $add_sql .= rtrim( $field , ',' ). ') values (' .rtrim( $value , ',' ). ')' ; return $this ->execute( $add_sql ); } /** +---------------------------------------------------------- * 删除 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @param +---------------------------------------------------------- */ public function delete (){ $del_sql = 'delete from `' . $this ->query_list[ 'table' ]. '` where ' . $this ->query_list[ 'where' ]; if (isset( $this ->query_list[ 'order' ])) $del_sql .= 'order by ' . $this ->query_list[ 'order' ]; if (isset( $this ->query_list[ 'limit' ])) $del_sql .= ' ' . $this ->query_list[ 'limit' ]; return $this ->execute( $del_sql ); } /** +---------------------------------------------------------- * 更新 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @param +---------------------------------------------------------- */ public function update(){ $update_sql = 'update `' . $this ->query_list[ 'table' ]. '` set ' ; $data = $this ->query_list[ 'data' ]; foreach ( $data as $k => $v ){ if ( is_numeric ( $v )) $update_sql .= '`' . $k . '` =' . $v . ',' ; else $update_sql .= '`' . $k . '` =\'' . $v . '\',' ; } $update_sql = rtrim( $update_sql , ',' ); if (isset( $this ->query_list[ 'where' ])) $update_sql .= ' where ' . $this ->query_list[ 'where' ]; if (isset( $this ->query_list[ 'order' ])) $update_sql .= ' order by ' . $this ->query_list[ 'order' ]; if (isset( $this ->query_list[ 'limit' ])) $update_sql .= ' ' . $this ->query_list[ 'limit' ]; return $this ->execute( $update_sql ); } /** +---------------------------------------------------------- * 执行查询 返回数据集 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @param string $sql sql指令 */ public function query( $sql ) { if ( ! $this ->conn ) return false; $this ->queryStr = $sql ; //释放前次的查询结果 if ( $this ->queryID ) { $this ->free(); } $this ->query_start_time = microtime(true); $this ->queryID = mysql_query( $sql , $this ->conn); $this ->query_count++; if ( false === $this ->queryID ) { $this ->error(); return false; } else { $this ->numRows = mysql_num_rows( $this ->queryID); return $this ->getAll(); } } /** +---------------------------------------------------------- * 执行语句 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @param string $sql sql指令 +---------------------------------------------------------- */ public function execute( $sql ) { if ( ! $this ->conn ) return false; $this ->queryStr = $sql ; //释放前次的查询结果 if ( $this ->queryID ) { $this ->free(); } $this ->query_start_time = microtime(true); $result = mysql_query( $sql , $this ->conn) ; $this ->query_count++; if ( false === $result ) { $this ->error(); return false; } else { $this ->numRows = mysql_affected_rows( $this ->conn); return $this ->numRows; } } /** +---------------------------------------------------------- * 获得所有的查询数据 +---------------------------------------------------------- * @access private +---------------------------------------------------------- * @return array */ private function getAll() { //返回数据集 $result = array (); if ( $this ->numRows >0) { while ( $row = mysql_fetch_assoc( $this ->queryID)){ $result [] = $row ; } mysql_data_seek( $this ->queryID,0); } return $result ; } /** +---------------------------------------------------------- * 取得数据表的字段信息 +---------------------------------------------------------- * @access public +---------------------------------------------------------- */ public function getFields( $tableName ) { $result = $this ->query( 'SHOW COLUMNS FROM `' . $tableName . '`' ); $info = array (); if ( $result ) { foreach ( $result as $key => $val ) { $info [ $val [ 'Field' ]] = array ( 'name' => $val [ 'Field' ], 'type' => $val [ 'Type' ], 'notnull' => (bool) ( $val [ 'Null' ] === '' ), // not null is empty, null is yes 'default' => $val [ 'Default' ], 'primary' => ( strtolower ( $val [ 'Key' ]) == 'pri' ), 'autoinc' => ( strtolower ( $val [ 'Extra' ]) == 'auto_increment' ), ); } } return $info ; } /** +---------------------------------------------------------- * 取得数据库的表信息 +---------------------------------------------------------- * @access public +---------------------------------------------------------- */ public function getTables( $dbName = '' ) { if (! empty ( $dbName )) { $sql = 'SHOW TABLES FROM ' . $dbName ; } else { $sql = 'SHOW TABLES ' ; } $result = $this ->query( $sql ); $info = array (); foreach ( $result as $key => $val ) { $info [ $key ] = current( $val ); } return $info ; } /** +---------------------------------------------------------- * 最后次操作的ID +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @param +---------------------------------------------------------- */ public function last_insert_id(){ return mysql_insert_id( $this ->conn); } /** * 执行一条带有结果集计数的 */ public function count ( $sql ){ return $this ->execute( $sql ); } /** +---------------------------------------------------------- * 启动事务 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @return void +---------------------------------------------------------- */ public function startTrans() { if ( $this ->transTimes == 0) { mysql_query( 'START TRANSACTION' , $this ->conn); } $this ->transTimes++; return ; } /** +---------------------------------------------------------- * 提交事务 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @return boolen +---------------------------------------------------------- */ public function commit() { if ( $this ->transTimes > 0) { $result = mysql_query( 'COMMIT' , $this ->conn); $this ->transTimes = 0; if (! $result ){ throw new Exception( $this ->error()); } } return true; } /** +---------------------------------------------------------- * 事务回滚 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @return boolen +---------------------------------------------------------- */ public function rollback() { if ( $this ->transTimes > 0) { $result = mysql_query( 'ROLLBACK' , $this ->conn); $this ->transTimes = 0; if (! $result ){ throw new Exception( $this ->error()); } } return true; } /** +---------------------------------------------------------- * 错误信息 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @param +---------------------------------------------------------- */ public function error() { $this ->error = mysql_error( $this ->conn); if ( '' != $this ->queryStr){ $this ->error .= "\n [ SQL语句 ] : " . $this ->queryStr; } return $this ->error; } /** +---------------------------------------------------------- * 释放查询结果 +---------------------------------------------------------- * @access public +---------------------------------------------------------- */ public function free() { @mysql_free_result( $this ->queryID); $this ->queryID = 0; $this ->query_list = null; } /** +---------------------------------------------------------- * 关闭连接 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @param +---------------------------------------------------------- */ function close(){ if ( $this ->conn && !mysql_close( $this ->conn)){ throw new Exception( $this ->error()); } $this ->conn = 0; $this ->query_count = 0; } function Get_user_shell_check( $uid , $shell ){ $sql = "select * n_user where `id` = '$uid'" ; $query =mysql_query( $sql ); $row = mysql_fetch_array( $query ); $us = is_array ( $row ); $shell = $us ? $shell == md5( $row [ 'username' ]. $row [ 'password' ].ALL_PS) : FALSE; if ( $shell ){ return $row ; } else { echo "你无权限" ; exit (); } } /** +---------------------------------------------------------- * 析构方法 +---------------------------------------------------------- * @access public +---------------------------------------------------------- */ function __destruct(){ $this ->close(); } }</code> |
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