动态网页技术PHP通过参数来生成MYSQL语句类

动态网页技术PHP通过参数来生成MYSQL语句类(5)    $className = get_class ( $this );
   if ( ! $this -> getLeftJoin()){ $this -> Error = " $className::$funct \nProperty 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 \nProperty Order was empty " ; return ;}
   if ( ! $this -> getFields()){ $this -> Error = " $className::$funct \nProperty 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 \nProperty Order not Numeric " ; return ;}
   if ( $Order > count ( $this -> Fields)){ $this -> Error = " $className::$funct \nMax value of property Sort is " . count ( $this -> Fields); return ;}