PHP实现的构造sql语句类实例，构造sql语句实例
本文实例讲述了PHP实现的构造sql语句类。分享给大家供大家参考，具体如下：
/**
* @package Database Class
* @author injection (mail:injection.mail@gmail.com)
* @version 1.0
*/
@ini_set( 'display_errors',0 );
class DataBase{
private $mDb_host,$mAb_user,$mAb_pwd,$mConn_No;
function DataBase( $Conn_Obj ){
$this->connectDb( $Conn_Obj );
}
function connectDb( $Conn_Obj ){
$this->mDb_host = $Conn_Obj->host;
$this->mAd_name = $Conn_Obj->user;
$this->mAd_pwd = $Conn_Obj->pwd;
$this->mConn_No = mysql_connect( $this->mDb_host, $this->mAd_name, $this->mAd_pwd );
}
function selectDb( $Conn_Obj ){
$this->mDb_name = $Conn_Obj->dbname;
mysql_select_db( $this->mDb_name );
}
}
/**
* @package Making Sqls Class exetends Database Class
* @author injection (mail:injection.mail@gmail.com)
* @version 1.0
*/
class MakeSql extends DataBase{
private $mSql;
function MakeSql( $type,$arr_colum_list, $arr_sql_choice ){
$this->MakeSqlType( $arr_colum_list, $arr_sql_choice );
}
//switch make list
function MakeSqlType( $type, $arr_colum_list, $arr_sql_choice ){
switch( $type ){
case 'insert':
return $this->makeInsert( $arr_colum_list, $arr_sql_choice );
case 'select':
return $this->makeSelect( $arr_colum_list, $arr_sql_choice );
case 'update':
return $this->makeUpdate( $arr_colum_list, $arr_sql_choice );
case 'delete':
return $this->makeDelete( $arr_colum_list, $arr_sql_choice );
}
}
//make insert
function makeInsert( $arr_colum_list,$arr_sql_choice ){
$colum_key = array_keys( $arr_colum_list );
$colum_value = array_values( $arr_colum_list );
$this->mSql = "INSERT INTO ".$arr_sql_choice["tbl_name"]."( ".join( ',' , $colum_key )." ) VALUES( '".join( "','" , $colum_value )."')";
return $this->mSql;
}
//making select
function makeSelect( $arr_colum_list = '*' , $arr_sql_choice ){
$colum_value = array_keys( $arr_colum_list );
foreach( $arr_sql_choice as $sql_key => $sql_value ){
if( strcmp( $sql_key, 'tbl_name' ) == 0 ){
if( strcmp($arr_colum_list, '*' ) !== 0 )
$this->mSql = "SELECT ".join( ',' , $colum_value )." FROM ".$sql_value;
else
$this->mSql = "SELECT * FROM ".$sql_value;
}
else
if( strcmp( $sql_value, '' ) !== 0 )
if(strcmp( $sql_key, 'WHERE' ) === 0 && strcmp( $sql_value, 'colum' ) === 0 ){
foreach($arr_colum_list As $colum_key => $colum_value )
$this->mSql .= "$colum_key = '$colum_value' AND ";
$this->mSql = rtrim( $this->mSql, " AND " );
}
else
$this->mSql .= " $sql_key ".$sql_value;
}
return $this->mSql;
}
//making update
function makeUpdate( $arr_colum_list, $arr_sql_choice ){
$this->mSql = "UPDATE ".$arr_sql_choice['tbl_name']." SET ";
foreach( $arr_colum_list as $colum_key => $colum_value )
$this->mSql .= "$colum_key = '$colum_value',";
$this->mSql = rtrim( $this->mSql , ',');
foreach( $arr_sql_choice as $sql_key => $sql_value ){
if( strcmp( $sql_value, '' ) !== 0 && strcmp( $sql_key, 'tbl_name' ) !==0 && strcmp( $sql_key, 'ORDER BY' ) !== 0 )
$this->mSql .= " $sql_key ".$sql_value;
}
return $this->mSql;
}
//making delete
function makeDelete( $arr_colum_list, $arr_sql_choice ){
$this->mSql = "DELETE FROM ".$arr_sql_choice['tbl_name'];
foreach( $arr_sql_choice as $sql_key => $sql_value ){
if( strcmp( $sql_key, 'tbl_name' ) !== 0 && strcmp( $sql_value, '' ) !== 0 ){
$this->mSql .= " $sql_key ".$sql_value;
}
}
return $this->mSql;
}
}
登录后复制
更多关于PHP相关内容感兴趣的读者可查看本站专题：《php+mysql数据库操作入门教程》、《php防止SQL注入方法总结》、《PHP基于pdo操作数据库技巧总结》及《php常见数据库操作技巧汇总》
希望本文所述对大家PHP程序设计有所帮助。
您可能感兴趣的文章:
- PHP执行批量mysql语句的解决方法
- php与mysql建立连接并执行SQL语句的代码
- php中转义mysql语句的实现代码
- PHP学习之SQL语句快速入门
- PHP 批量删除 sql语句
- php执行sql语句的写法
- php mssql 数据库分页SQL语句
- PHP基于单例模式实现的mysql类
- php封装的连接Mysql类及用法分析
- 一个php Mysql类 可以参考学习熟悉下
- 十二个常见的PHP+MySql类免费CMS系统
