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PHP实现的通过参数生成MYSQL语句类完整实例

发布时间:2022-02-24 17:15:05 所属栏目:PHP教程 来源:互联网
导读:本文实例讲述了PHP实现的通过参数生成MYSQL语句类。分享给大家供大家参考,具体如下: 这个类可以通过指定的表和字段参数创建SELECT ,INSERT , UPDATE 和 DELETE 语句。 这个类可以创建SQL语句的WHERE条件,像LIKE的查询语句,使用LEFT JOIN和ORDER 语句.
  本文实例讲述了PHP实现的通过参数生成MYSQL语句类。分享给大家供大家参考,具体如下:
 
  这个类可以通过指定的表和字段参数创建SELECT ,INSERT , UPDATE 和 DELETE 语句。
 
  这个类可以创建SQL语句的WHERE条件,像LIKE的查询语句,使用LEFT JOIN和ORDER 语句.
 
  <?php
  
   /* *******************************************************************
  
  Example file
  
  This example shows how to use the MyLibSQLGen class
  
  The example is based on the following MySQL table:
  
  CREATE TABLE customer (
  
   id int(10) unsigned NOT NULL auto_increment,
  
   name varchar(60) NOT NULL default '',
  
   address varchar(60) NOT NULL default '',
  
   city varchar(60) NOT NULL default '',
  
   PRIMARY KEY (cust_id)
  
  ) TYPE=MyISAM;
  
  ******************************************************************* */
  
   require_once ( " class_mylib_SQLGen-1.0.php " );
  
   $fields = Array ( " name " , " address " , " city " );
  
   $values = Array ( " Fadjar " , " Resultmang Raya Street " , " Jakarta " );
  
   $tables = Array ( " customer " );
  
   echo  " <b>Result Generate Insert</b><br> " ;
  
   $object = new MyLibSQLGen();
  
   $object -> clear_all_assign(); // to refresh all property but it no need when first time execute  
  
   $object -> setFields( $fields );
  
   $object -> setValues( $values );
  
   $object -> setTables( $tables );
  
   if ( ! $object -> getInsertSQL()){ echo  $object -> Error; exit ;}
  
   else { $sql = $object -> Result; echo  $sql . " <br> " ;}
  
   echo  " <b>Result Generate Update</b><br> " ;
  
   $fields = Array ( " name " , " address " , " city " );
  
   $values = Array ( " Fadjar " , " Resultmang Raya Street " , " Jakarta " );
  
   $tables = Array ( " customer " );
  
   $id = 1 ;
  
   $conditions [ 0 ][ " condition " ] = " id='$id' " ;
  
   $conditions [ 0 ][ " connection " ] = "" ;
  
   $object -> clear_all_assign();
  
   $object -> setFields( $fields );
  
   $object -> setValues( $values );
  
   $object -> setTables( $tables );
  
   $object -> setConditions( $conditions );
  
   if ( ! $object -> getUpdateSQL()){ echo  $object -> Error; exit ;}
  
   else { $sql = $object -> Result; echo  $sql . " <br> " ;}
  
   echo  " <b>Result Generate Delete</b><br> " ;
  
   $tables = Array ( " customer " );
  
   $conditions [ 0 ][ " condition " ] = " id='1' " ;
  
   $conditions [ 0 ][ " connection " ] = " OR " ;
  
   $conditions [ 1 ][ " condition " ] = " id='2' " ;
  
   $conditions [ 1 ][ " connection " ] = " OR " ;
  
   $conditions [ 2 ][ " condition " ] = " id='4' " ;
  
   $conditions [ 2 ][ " connection " ] = "" ;
  
   $object -> clear_all_assign();
  
   $object -> setTables( $tables );
  
   $object -> setConditions( $conditions );
  
   if ( ! $object -> getDeleteSQL()){ echo  $object -> Error; exit ;}
  
   else { $sql = $object -> Result; echo  $sql . " <br> " ;}
  
   echo  " <b>Result Generate List</b><br> " ;
  
   $fields = Array ( " id " , " name " , " address " , " city " );
  
   $tables = Array ( " customer " );
  
   $id = 1 ;
  
   $conditions [ 0 ][ " condition " ] = " id='$id' " ;
  
   $conditions [ 0 ][ " connection " ] = "" ;
  
   $object -> clear_all_assign();
  
   $object -> setFields( $fields );
  
   $object -> setTables( $tables );
  
   $object -> setConditions( $conditions );
  
   if ( ! $object -> getQuerySQL()){ echo  $object -> Error; exit ;}
  
   else { $sql = $object -> Result; echo  $sql . " <br> " ;}
  
   echo  " <b>Result Generate List with search on all fields</b><br> " ;
  
   $fields = Array ( " id " , " name " , " address " , " city " );
  
   $tables = Array ( " customer " );
  
   $id = 1 ;
  
   $search = " Fadjar Nurswanto " ;
  
   $object -> clear_all_assign();
  
   $object -> setFields( $fields );
  
   $object -> setTables( $tables );
  
   $object -> setSearch( $search );
  
   if ( ! $object -> getQuerySQL()){ echo  $object -> Error; exit ;}
  
   else { $sql = $object -> Result; echo  $sql . " <br> " ;}
  
   echo  " <b>Result Generate List with search on some fields</b><br> " ;
  
   $fields = Array ( " id " , " name " , " address " , " city " );
  
   $tables = Array ( " customer " );
  
   $id = 1 ;
  
   $search = Array (
  
         " name " => " Fadjar Nurswanto " ,  
  
         " address " => " Tomang Raya "
  
      );
  
   $object -> clear_all_assign();
  
   $object -> setFields( $fields );
  //Cuoxin.com
   $object -> setTables( $tables );
  
   $object -> setSearch( $search );
  
   if ( ! $object -> getQuerySQL()){ echo  $object -> Error; exit ;}
  
   else { $sql = $object -> Result; echo  $sql . " <br> " ;}
  
  ?>  
  类代码:
 
  <?php
  
   /*  
  
  Created By    : Fadjar Nurswanto <fajr_n@rindudendam.net>
  
  DATE      : 2006-08-02
  
  PRODUCTNAME    : class MyLibSQLGen
  
  PRODUCTVERSION  : 1.0.0
  
  DESCRIPTION    : class yang berfungsi untuk menggenerate SQL
  
  DENPENCIES    :
  
   */
  
   class MyLibSQLGen
  
  {
  
     var  $Result ;
  
     var  $Tables = Array ();
  
     var  $Values = Array ();
  
     var  $Fields = Array ();
  
     var  $Conditions = Array ();
  
     var  $Condition ;
  
     var  $LeftJoin = Array ();
  
     var  $Search ;
  
     var  $Sort = " ASC " ;
  
     var  $Order ;
  
     var  $Error ;
  
     function MyLibSQLGen(){}
  
     function BuildCondition()
  
    {
  
       $funct = " BuildCondition " ;
  
       $className = get_class ( $this );
  
       $conditions = $this -> getConditions();
  
       if ( ! $conditions ){ $this -> dbgDone( $funct ); return  true ;}
  
       if ( ! is_array ( $conditions ))
  
      {
  
         $this -> Error = " $className::$funct Variable conditions not Array " ;
  
         return ;
  
      }
  
       for ( $i = 0 ; $i < count ( $conditions ); $i ++ )
  
      {
  
         $this -> Condition .= $conditions [ $i ][ " condition " ] . "  " . $conditions [ $i ][ " connection " ] . "  " ;
  
      }
  
       return  true ;
  
    }
  
     function BuildLeftJoin()
  
    {
  
       $funct = " BuildLeftJoin " ;
  
       $className = get_class ( $this );
  
       if ( ! $this -> getLeftJoin()){ $this -> Error = " $className::$funct Property LeftJoin was empty " ; return ;}
  
       $LeftJoinVars = $this -> getLeftJoin();
  
       $hasil = false ;
  
       foreach ( $LeftJoinVars  as  $LeftJoinVar )
  
      {
  
        @ $hasil .= " LEFT JOIN " . $LeftJoinVar [ " table " ];
  
         foreach ( $LeftJoinVar [ " on " ] as  $var )
  
        {
  
          @ $condvar .= $var [ " condition " ] . "  " . $var [ " connection " ] . "  " ;
  
        }
  
         $hasil .= " ON ( " . $condvar . " ) " ;
  
         unset ( $condvar );
  
      }
  
       $this -> ResultLeftJoin = $hasil ;
  
       return  true ;
  
    }
  
     function BuildOrder()
  
    {
  
       $funct = " BuildOrder " ;
  
       $className = get_class ( $this );
  
       if ( ! $this -> getOrder()){ $this -> Error = " $className::$funct Property Order was empty " ; return ;}
  
       if ( ! $this -> getFields()){ $this -> Error = " $className::$funct Property Fields was empty " ; return ;}
  
       $Fields = $this -> getFields();
  
       $Orders = $this -> getOrder();
  
       if ( ereg ( " , " , $Orders )){ $Orders = explode ( " , " , $Order );}
  
       if ( ! is_array ( $Orders )){ $Orders = Array ( $Orders );}
  
       foreach ( $Orders  as  $Order )
  
      {
  
         if ( ! is_numeric ( $Order )){ $this -> Error = " $className::$funct Property Order not Numeric " ; return ;}
  
         if ( $Order  >  count ( $this -> Fields)){ $this -> Error = " $className::$funct Max value of property Sort is " . count ( $this -> Fields); return ;}
  
        @ $xorder .= $Fields [ $Order ] . " , " ;
  
      }
  
       $this -> ResultOrder = " ORDER BY " . substr ( $xorder , 0 ,- 1 );
  
       return  true ;
  
    }
  
     function BuildSearch()
  
    {
  
       $funct = " BuildSearch " ;
  
       $className = get_class ( $this );
  
       if ( ! $this -> getSearch()){ $this -> Error = " $className::$funct Property Search was empty " ; return ;}
  
       if ( ! $this -> getFields()){ $this -> Error = " $className::$funct Property Fields was empty " ; return ;}
  
       $Fields = $this -> getFields();
  
       $xvalue = $this -> getSearch();
  
       if ( is_array ( $xvalue ))
  
      {
  
         foreach ( $Fields  as  $field )
  
        {
  
           if (@ $xvalue [ $field ])
  
          {
  
             $Values = explode ( "  " , $xvalue [ $field ]);
  
             foreach ( $Values  as  $Value )
  
            {
  
              @ $hasil .= $field . " LIKE '% " . $Value . " %' OR " ;
  
            }
  
             if ( $hasil )
  
            {
  
              @ $hasil_final .= " ( " . substr ( $hasil , 0 ,- 4 ) . " ) AND " ;
  
               unset ( $hasil );
  
            }
  
          }
  
        }
  
         $hasil = $hasil_final ;
  
      }
  
       else
  
      {
  
         foreach ( $Fields  as  $field )
  
        {
  
           $Values = explode ( "  " , $xvalue );
  
           foreach ( $Values  as  $Value )
  
          {
  
            @ $hasil .= $field . " LIKE '% " . $Value . " %' OR " ;
  
          }
  
        }
  
      }
  
       $this -> ResultSearch = substr ( $hasil , 0 ,- 4 );
  
       return  true ;
  
    }
  
     function clear_all_assign()
  
    {
  
       $this -> Result = null ;
  
       $this -> ResultSearch = null ;
  
       $this -> ResultLeftJoin = null ;
  
       $this -> Result = null ;
  
       $this -> Tables = Array ();
  
       $this -> Values = Array ();
  
       $this -> Fields = Array ();
  
       $this -> Conditions = Array ();
  
       $this -> Condition = null ;
  
       $this -> LeftJoin = Array ();
  
       $this -> Sort = " ASC " ;
  
       $this -> Order = null ;
  
       $this -> Search = null ;
  
       $this -> fieldSQL = null ;
  
       $this -> valueSQL = null ;
  
       $this -> partSQL = null ;
  
       $this -> Error = null ;
  
       return  true ;
  
    }
  
     function CombineFieldValue( $manual = false )
  
    {
  
       $funct = " CombineFieldsPostVar " ;
  
       $className = get_class ( $this );
  
       $fields = $this -> getFields();
  
       $values = $this -> getValues();
  
       if ( ! is_array ( $fields ))
  
      {
  
         $this -> Error = " $className::$funct Variable fields not Array " ;
  
         return ;
  
      }
  
       if ( ! is_array ( $values ))
  
      {
  
         $this -> Error = " $className::$funct Variable values not Array " ;
  
         return ;
  
      }
  
       if ( count ( $fields ) != count ( $values ))
  
      {
  
         $this -> Error = " $className::$funct Count of fields and values not match " ;
  
         return ;
  
      }
  
       for ( $i = 0 ; $i < count ( $fields ); $i ++ )
  
      {
  
        @ $this -> fieldSQL .= $fields [ $i ] . " , " ;
  
         if ( $fields [ $i ] ==  " pwd "  ||  $fields [ $i ] ==  " password "  ||  $fields [ $i ] ==  " pwd " )
  
        {
  
          @ $this -> valueSQL .= " password(' " . $values [ $i ] . " '), " ;
  
          @ $this -> partSQL .= $fields [ $i ] . " =password(' " . $values [ $i ] . " '), " ;
  
        }
  
         else
  
        {
  
           if ( is_numeric ( $values [ $i ]))
  
          {
  
            @ $this -> valueSQL .= $values [ $i ] . " , " ;
  
            @ $this -> partSQL .= $fields [ $i ] . " = " . $values [ $i ] . " , " ;
  
          }
  
           else
  
          {
  
            @ $this -> valueSQL .= " ' " . $values [ $i ] . " ', " ;
  
            @ $this -> partSQL .= $fields [ $i ] . " =' " . $values [ $i ] . " ', " ;
  
          }
  
        }
  
      }
  
       $this -> fieldSQL = substr ( $this -> fieldSQL , 0 ,- 1 );
  
       $this -> valueSQL = substr ( $this -> valueSQL , 0 ,- 1 );
  
       $this -> partSQL = substr ( $this -> partSQL , 0 ,- 1 );
  
       return  true ;
  
    }
  
     function getDeleteSQL()
  
    {
  
       $funct = " getDeleteSQL " ;
  
       $className = get_class ( $this );
  
       $Tables = $this -> getTables();
  
       if ( ! $Tables  ||  ! count ( $Tables ))
  
      {
  
         $this -> dbgFailed( $funct );
  
         $this -> Error = " $className::$funct Table was empty " ;
  
         return ;
  
      }
  
       for ( $i = 0 ; $i < count ( $Tables ); $i ++ )
  
      {
  
        @ $Table .= $Tables [ $i ] . " , " ;
  
      }
  
       $Table = substr ( $Table , 0 ,- 1 );
  
       $sql = " DELETE FROM " . $Table ;
  
       if ( $this -> getConditions())
  
      {
  
         if ( ! $this -> BuildCondition()){ $this -> dbgFailed( $funct ); return ;}
  
         $sql .= " WHERE " . $this -> getCondition();
  
      }
  
       $this -> Result = $sql ;
  
       return  true ;
  
    }
  
     function getInsertSQL()
  
    {
  
       $funct = " getInsertSQL " ;
  
       $className = get_class ( $this );
  
       if ( ! $this -> getValues()){ $this -> Error = " $className::$funct Property Values was empty " ; return ;}
  
       if ( ! $this -> getFields()){ $this -> Error = " $className::$funct Property Fields was empty " ; return ;}
  
       if ( ! $this -> getTables()){ $this -> Error = " $className::$funct Property Tables was empty " ; return ;}
  
       if ( ! $this -> CombineFieldValue()){ $this -> dbgFailed( $funct ); return ;}
  
       $Tables = $this -> getTables();
  
       $sql = " INSERT INTO " . $Tables [ 0 ] . " ( " . $this -> fieldSQL . " ) VALUES ( " . $this -> valueSQL . " ) " ;
  
       $this -> Result = $sql ;
  
       return  true ;
  
    }
  
     function getUpdateSQL()
  
    {
  
       $funct = " getUpdateSQL " ;
  
       $className = get_class ( $this );
  
       if ( ! $this -> getValues()){ $this -> Error = " $className::$funct Property Values was empty " ; return ;}
  
       if ( ! $this -> getFields()){ $this -> Error = " $className::$funct Property Fields was empty " ; return ;}
  
       if ( ! $this -> getTables()){ $this -> Error = " $className::$funct Property Tables was empty " ; return ;}
  
       if ( ! $this -> CombineFieldValue()){ $this -> dbgFailed( $funct ); return ;}
  
       if ( ! $this -> BuildCondition()){ $this -> dbgFailed( $funct ); return ;}
  
       $Tables = $this -> getTables();
  
       $sql = " UPDATE " . $Tables [ 0 ] . " SET " . $this -> partSQL . " WHERE " . $this -> getCondition();
  
       $this -> Result = $sql ;
  
       return  true ;
  
    }
  
     function getQuerySQL()
  
    {
  
       $funct = " getQuerySQL " ;
  
       $className = get_class ( $this );
  
       if ( ! $this -> getFields()){ $this -> Error = " $className::$funct Property Fields was empty " ; return ;}
  
       if ( ! $this -> getTables()){ $this -> Error = " $className::$funct Property Tables was empty " ; return ;}
  
       $Fields = $this -> getFields();
  
       $Tables = $this -> getTables();
  
       foreach ( $Fields  as  $Field ){@ $sql_raw .= $Field . " , " ;}
  
       foreach ( $Tables  as  $Table ){@ $sql_table .= $Table . " , " ;}
  
       $this -> Result = " SELECT " . substr ( $sql_raw , 0 ,- 1 ) . " FROM " . substr ( $sql_table , 0 ,- 1 );
  
       if ( $this -> getLeftJoin())
  
      {
  
         if ( ! $this -> BuildLeftJoins()){ $this -> dbgFailed( $funct ); return ;}
  
         $this -> Result .= "  " . $this -> ResultLeftJoin;
  
      }
  
       if ( $this -> getConditions())
  
      {
  
         if ( ! $this -> BuildCondition()){ $this -> dbgFailed( $funct ); return ;}
  
         $this -> Result .= " WHERE ( " . $this -> Condition . " ) " ;
  
      }
  
       if ( $this -> getSearch())
  
      {
  
         if ( ! $this -> BuildSearch()){ $this -> dbgFailed( $funct ); return ;}
  
         if ( $this -> ResultSearch)
  
        {
  
           if ( eregi ( " WHERE " , $this -> Result)){ $this -> Result .= " AND " . $this -> ResultSearch;}
  
           else { $this -> Result .= " WHERE " . $this -> ResultSearch;}
  
        }
  
      }
  
       if ( $this -> getOrder())
  
      {
  
         if ( ! $this -> BuildOrder()){ $this -> dbgFailed( $funct ); return ;}
  
         $this -> Result .= "  " . $this -> ResultOrder;
  
      }
  
       if ( $this -> getSort())
  
      {
  
         if (@ $this -> ResultOrder)
  
        {
  
           $this -> Result .= "  " . $this -> getSort();
  
        }
  
      }
  
       return  true ;
  
    }
  
     function getCondition(){ return @ $this -> Condition;}
  
     function getConditions(){ if ( count (@ $this -> Conditions) &&  is_array (@ $this -> Conditions)){ return @ $this -> Conditions;}}
  
     function getFields(){ if ( count (@ $this -> Fields) &&  is_array (@ $this -> Fields)){ return @ $this -> Fields;}}
  
     function getLeftJoin(){ if ( count (@ $this -> LeftJoin) &&  is_array (@ $this -> LeftJoin)){ return @ $this -> LeftJoin;}}
  
     function getOrder(){ return @ $this -> Order;}
  
     function getSearch(){ return @ $this -> Search;}
  
     function getSort(){ return @ $this -> Sort ;}
  
     function getTables(){ if ( count (@ $this -> Tables) &&  is_array (@ $this -> Tables)){ return @ $this -> Tables;}}
  
     function getValues(){ if ( count (@ $this -> Values) &&  is_array (@ $this -> Values)){ return @ $this -> Values;}}
  
     function setCondition( $input ){ $this -> Condition = $input ;}
  
     function setConditions( $input )
  
    {
  
       if ( is_array ( $input )){ $this -> Conditions = $input ;}
  
       else { $this -> Error = get_class ( $this ) . " ::setConditions Parameter input not array " ; return ;}
  
    }
  
     function setFields( $input )
  
    {
  
       if ( is_array ( $input )){ $this -> Fields = $input ;}
  
       else { $this -> Error = get_class ( $this ) . " ::setFields Parameter input not array " ; return ;}
  
    }
  
     function setLeftJoin( $input )
  
    {
  
       if ( is_array ( $input )){ $this -> LeftJoin = $input ;}
  
       else { $this -> Error = get_class ( $this ) . " ::setFields Parameter input not array " ; return ;}
  
    }
  
     function setOrder( $input ){ $this -> Order = $input ;}
  
     function setSearch( $input ){ $this -> Search = $input ;}
  
     function setSort( $input ){ $this -> Sort = $input ;}
  
     function setTables( $input )
  
    {
  
       if ( is_array ( $input )){ $this -> Tables = $input ;}
  
       else { $this -> Error = get_class ( $this ) . " ::setTables Parameter input not array " ; return ;}
  
    }
  
     function setValues( $input )
  
    {
  
       if ( is_array ( $input )){ $this -> Values = $input ;}
  
       else { $this -> Error = get_class ( $this ) . " ::setValues Parameter input not array " ; return ;}
  
    }
  
  }
  
  ?>  
  
  </fajr_n@rindudendam.net> 

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