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PHP通过参数来生成MYSQL语句类2008-02-27这个类可以通过具有参数的数组来构建MySQL查询语句。

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。

例子:

<？ 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 ）;
$object -> setTables（ $tables ）;
$object -> setSearch（ $search ）;

if （ ！ $object -> getQuerySQL（））{ echo $object -> Error; exit ;}
else { $sql = $object -> Result; echo $sql . " <br> " ;}
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