自己写的一个php 用mysqli操作数据库辅助类
001 002 003 004 005 006 007 008 009 010 011 012 013 014 015 016 017 018 019 020 021 022 023 024 025 026 027 028 029 030 031 032 033 034 035 036 037 038 039 040 041 042 043 044 045 046 047 048 049 050 051 052 053 054 055 056 057 058 059 060 061 062 063 064 065 066 067 068 069 070 071 072 073 074 075 076 077 078 079 080 081 082 083 084 085 086 087 088 089 090 091 092 093 094 095 096 097 098 099 100 101 102 103 104 105 106 107 108 109 110 | <?php if ( stristr ( $_SERVER [ "PHP_SELF" ], basename ( __FILE__ ) )) { exit ( 'forbidden' ); } require_once 'IDbHelper.php' ; class MysqliHelper implements IDbHelper { private $host ; private $user ; private $password ; private $dbname ; private $port ; private $charset ; private $mysqli ; function __construct( $host , $user , $password , $dbname , $port = 3306, $charset = "utf-8" ) { $this ->host = $host ; $this ->user = $user ; $this ->password = $password ; $this ->dbname = $dbname ; $this ->port = $port ; $this ->charset = $charset ; $this ->mysqli = new mysqli ( $host , $user , $password , $dbname , $port ); if ( $this ->mysqli->errno != 0) { echo "mysqli 连接错误:" . $this ->mysqli->error; exit (); } } function init() { if ( $this ->mysqli == null) { $this ->mysqli = new mysqli ( $this -> $host , $this -> $user , $this -> $password , $this -> $dbname , $this ->port ); if ( $this ->mysqli->errno != 0) { echo "mysqli 连接错误:" . $this ->mysqli->error; exit (); } } } /** * 返回查询结果集, 以 key 为键组织成关联数组, 每一个元素是一个对象. * 如果 key 为空, 则将结果组织成普通的数组. * $sql 必填 sql语句 * $params 可选参数,以sql参数名作为key的数组 */ public function query( $sql , $arr =null) { $this ->init(); $result = $this ->mysqli->query ( $sql ); /* * $data = array(); while($row = $result->fetch_array(MYSQLI_ASSOC)){ $data[] = $row; } return $data; */ echo $this ->mysqli->error; return $result ; } // 以数组的方式返回结果的第一条记录 function getRow( $sql , $arr =null) { $this ->init(); $result = $this ->mysqli->query ( $sql ); echo $this ->mysqli->error; while ( $row = $result ->fetch_array ( MYSQLI_ASSOC ) ) { return $row ; } return null; } // 返回结果的第一条第一列记录 function getObject( $sql , $arr =null) { $this ->init(); $result = $this ->mysqli->query ( $sql ); echo $this ->mysqli->error; while ( $row = $result ->fetch_array ( MYSQLI_NUM ) ) { return $row [0]; } return null; } // 执行sql语句 function exec ( $sql , $arr =null) { $this ->init(); $count = $this ->mysqli->query ( $sql ); echo $this ->mysqli->error; return $this ->mysqli->affected_rows; } public function data() { $this ->init(); return $this ->mysqli; } function Insert( $tableName , $arr ) { return 0; } function Update( $tableName , $primary , $arr ) { return 0; } function __destruct() { if ( $this ->mysqli) { //$this->mysqli->close (); $this ->mysqli = null; } } } ?> |
5/8/2014 4:58:04 PM 58.248.2....
测试......