PHP Classes

Nemiro Data PHP: Compose and execute MySQL or PostgreSQL queries

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nemiro-data-php 2.0Custom (specified...5.3PHP 5, Databases


This class can compose and execute MySQL or PostgreSQL queries.

It provides a common interface to access MySQL using MySQLi or PostgreSQL databases.

The common interface can execute queries with prepare statements or not, returning query results in arrays, etc..

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# include config file
require_once 'config.php';

# include the db client classes file (use own path of the file location)
require_once '../Import.php';

# import MySql client
use Nemiro\Data\MySql as MySql;
# import command class
use Nemiro\Data\DBCommand as DBCommand;
# import parameters type list
use Nemiro\Data\DBParameterType as DBParameterType;

# best practice is to use 'try { } catch { }' blocks
# create client instance
$client = new MySql();

# you can specify the text of the query into the Command property
$client->Command = 'SELECT * FROM users';

# and execute the query by any method:
    # $client->GetRow(); # return single row
    # $client->GetTable(); # return all rows
    # $client->GetData(); # return array tables

    # for example, get all rows
$table = $client->GetTable();

# you can build a query from the input parameters,
    # but you will need to check the type and value of incoming data
    # it is bad practice
$client->Command = 'DELETE FROM users WHERE id_users = '.(int)$_GET['id'];

# it is best to use parameterized queries
$client->Command = new DBCommand('DELETE FROM users WHERE id_users = @id_users');
$client->Command->Parameters->Add('@id_users', $_GET['id'], DBParameterType::Integer);
# or
    # $client->Command->Parameters->Add('@id_users', $_GET['id']);
    # or
    # $client->Command->Parameters->Add('@id_users').SetValue($_GET['id']);
    # it is a safe solution

    # execute the query
$affectedRows = $client->ExecuteNonQuery();

'Deleted: '.$affectedRows.'<br />';
catch (
Exception $ex)
'Error: '.$ex->getMessage();

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