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DB_DataObject

By Bee

Last updated: September 14, 2005

Configuration - A simple example
Using common sql commands - select, insert, update, delete
Joins - Linking related tables
SQL Casting
Debug queries
Other usefull features

Source code: Using common sql commands

Retrieve information with get and find

In this chapter we will use the configuration files and database from previous chapter.

To get the records for one specific client we will use the get() method.

//include configuration file
require_once( 'startup.php' );

//create client object
$client = DB_DataObject::factory( 'clients' );

//get the records for the clients_id 10, where clients_id is primary key.
$client->get(10);
//display client details
echo $client->name . ' - ' . $client->email . ' - ' . $client->job;

//another usefull way to display client details is to create an array with client details, using toArray() method
$arr_client = $client->toArray();
print_r( $arr_client );

In the next example we will retrieve data based on a (key,value) pair.

//include configuration file
require_once( 'startup.php' );

//create client object
$client = DB_DataObject::factory( 'clients' );

//get the data based on a key,value pair
$client->get('email','Test@askbee.net');

Fetch multiple records

We will search for all the clients that have the 'web developer' job

//include configuration file
require_once( 'startup.php' );

//create client object
$client = DB_DataObject::factory( 'clients' );

//get the clients
$client->job = 'web developer';
//find() method returns the number of records
$nr_clients = $client->find();

//check if clients were found
if( $nr_clients ) > 0 )
{
    //display found clients
    while( $client->fetch() )
    {
       echo $client->name;
    }
}
else
{
    No client found.
}

Insert a new record

//include configuration file
require_once( 'startup.php' );

//create client object
$client = DB_DataObject::factory( 'clients' );

//set clients properties
$client->name = 'Another Test';
$client->email = 'another@whateverdomainabc.com';
$client->job = 'general manager';
//insert the new record into database and returns the ID
$new_client_id = $client->insert();

Update an existing record

Delete a record from database

//include configuration file
require_once( 'startup.php' );

//create client object
$client = DB_DataObject::factory( 'clients' );

//get client properties with ID=10
$client->get( 10 );

//delete this client
$client->delete();

//if you want to delete all the clients that have the 'web developer' job, you can use WhereAdd() method
$client->whereAdd( "job='web_developer'" );
$client->delete( DB_DATAOBJECT_WHEREADD_ONLY );

//Notice that in this case you must use DB_DATAOBJECT_WHEREADD_ONLY constant.

This example was tested on a Windows platform, PHP 4.3.9, MySQL 4.0.12, Apache 1.3.33

Download the whole working archive Simple Example.

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