README

QuEasy PHP Framework - Database

Package v-dem/queasy-db

QuEasy DB is a set of database access classes for CRUD operations. Some of the most usual queries can be built automatically (like SELECT by unique field value/values, UPDATE, INSERT and DELETE). More complex queries can be defined in database and/or tables config. The main goal is to separate SQL queries out of PHP code and provide an easy way for CRUD operations.

Features

• QuEasy DB extends PDO class, so any project which uses PDO can be seamlessly moved to use QuEasy DB.
• Simple CRUD database operations in just one PHP code row.
• Separating SQL queries from PHP code.

Requirements

• PHP version 5.3 or higher

Installation

composer require v-dem/queasy-db

It will also install v-dem/queasy-helper.

Usage

Notes

• You can use setLogger() method which accepts Psr\Log\LoggerInterface implementation to log all queries, by default Psr\Log\NullLogger is used.
• By default error mode is set to PDO::ERRMODE_EXCEPTION (as in PHP8) if another mode is not set in $options.

IMPORTANT!

• For MySQL Server need to set option PDO::MYSQL_ATTR_INIT_COMMAND to SET GLOBAL SQL_MODE=ANSI_QUOTES or run same query before calling DB-specific methods.
• For MSSQL Server need to run SET QUOTED_IDENTIFIER ON or SET ANSI_DEFAULTS ON query before calling DB-specific methods.

Initialization

Sample:

$db = new queasy\db\Db(
    [
        'dsn' => 'pgsql:host=localhost;dbname=test',
        'user' => 'test_user',
        'password' => 'test_password',
        'options' => [
            ...options...
        ]
    ]
);

Or:

$db = new queasy\db\Db(
    [
        'connection' => [
            'dsn' => 'pgsql:host=localhost;dbname=test',
            'user' => 'test_user',
            'password' => 'test_password',
            'options' => [
                ...options...
            ]
        ]
    ]
);

Or PDO-way:

$db = new queasy\db\Db('pgsql:host=localhost;dbname=test', 'test_user', 'test_password', $options);

• Fourth argument ($options) is optional, will be passed to PDO::prepare()

Get all records from users table

$users = $db->users->all();

Using foreach with users table

foreach ($db->users as $user) {
    // Do something
}

Get single record from users table by id key

$user = $db->users->id[$userId];

It's possible to use select() method to pass PDO options; select() returns PDOStatement instance:

$users = $db->users->id->select($userId, $options);

Get multiple records

$users = $db->users->id[[$userId1, $userId2]];

Insert a record into users table using associative array

$db->users[] = [
    'email' => 'john.doe@example.com',
    'password_hash' => sha1('myverystrongpassword')
];

Insert a record into users table by fields order

$db->users[] = [
    'john.doe@example.com',
    sha1('myverystrongpassword')
];

Insert many records into users table using associative array (it will generate single INSERT statement)

$db->users[] = [
    [
        'email' => 'john.doe@example.com',
        'password_hash' => sha1('myverystrongpassword')
    ], [
        'email' => 'mary.joe@example.com',
        'password_hash' => sha1('herverystrongpassword')
    ]
];

Insert many records into users table by order

$db->users[] = [
    [
        'john.doe@example.com',
        sha1('myverystrongpassword')
    ], [
        'mary.joe@example.com',
        sha1('herverystrongpassword')
    ]
];

Inserting many records into users table with field names denoted separately

$db->users[] = [
    [
        'email',
        'password_hash'
    ], [
        [
            'john.doe@example.com',
            sha1('myverystrongpassword')
        ], [
            'mary.joe@example.com',
            sha1('herverystrongpassword')
        ]
    ]
];

Also it's possible to use insert() method (in the same way as above) when need to pass PDO options; returns last insert id for single insert and number of inserted rows for multiple inserts:

$userId = $db->users->insert([
    'email' => 'john.doe@example.com',
    'password_hash' => sha1('myverystrongpassword')
], $options);

$insertedRowsCount = $db->users->insert([
    [
        'email' => 'john.doe@example.com',
        'password_hash' => sha1('myverystrongpassword')
    ], [
        'email' => 'mary.joe@example.com',
        'password_hash' => sha1('herverystrongpassword')
    ]
], $options);

• Second argument ($options) is optional, will be passed to PDO::prepare()

Get last insert id (alias of lastInsertId() method)

$newUserId = $db->id();

Update a record in users table by id key

$db->users->id[$userId] = [
    'password_hash' => sha1('mynewverystrongpassword')
]

$updatedRowsCount = $db->users->id->update($userId, [
    'password_hash' => sha1('mynewverystrongpassword')
], $options);

• Third argument ($options) is optional, will be passed to PDO::prepare()

Update multiple records

$db->users->id[[$userId1, $userId2]] = [
    'is_blocked' => true
]

Delete a record in users table by id key

unset($db->users->id[$userId]);

Delete multiple records

unset($db->users->id[[$userId1, $userId2]]);

$deletedRowsCount = $db->users->id->delete([[$userId1, $userId2]], $options);

• Second argument ($options) is optional, will be passed to PDO::prepare()

Get count of all records in users table

$usersCount = count($db->users);

Using transactions

$db->trans(function() use($db) {
    // Run queries inside a transaction, for example:
    $db->users[] = [
        'john.doe@example.com',
        sha1('myverystrongpassword')
    ];
});

• On exception transaction is rolled back and exception re-thrown to outer code.

Run custom query (returns PDOStatement)

$users = $db->run('
    SELECT  *
    FROM    "users"
    WHERE   "name" LIKE concat(\'%\', :searchName, \'%\')',
    [
        ':searchName' => 'John'
    ],
    $options
)->fetchAll();

• Third argument ($options) is optional, will be passed to PDO::prepare()

Run query predefined in configuration

This feature can help keep code cleaner and place SQL code outside PHP, somewhere in config files.

$db = new queasy\db\Db(
    [
        'connection' => [
            'dsn' => 'pgsql:host=localhost;dbname=test',
            'user' => 'test_user',
            'password' => 'test_password'
        ],
        'queries' => [
            'searchUsersByName' => [
                'sql' => '
                    SELECT  *
                    FROM    "users"
                    WHERE   "name" LIKE concat(\'%\', :searchName, \'%\')',
                'returns' => Db::RETURN_ALL
            ]
        ]
    ]
);

$users = $db->searchUsersByName([
    'searchName' => 'John'
]);

• Possible values for returns option are Db::RETURN_STATEMENT (default, returns PDOStatement instance), Db::RETURN_ONE, Db::RETURN_ALL, Db::RETURN_VALUE

Also it is possible to group predefined queries by tables:

$db = new queasy\db\Db(
    [
        'connection' => [
            'dsn' => 'pgsql:host=localhost;dbname=test',
            'user' => 'test_user',
            'password' => 'test_password'
        ],
        'tables' => [
            'users' => [
                'searchByName' => [
                    'sql' => '
                        SELECT  *
                        FROM    "user_roles"
                        WHERE   "name" LIKE concat(\'%\', :searchName, \'%\')',
                    'returns' => Db::RETURN_ALL
                ]
            ]
        ]
    ]
);

$users = $db->users->searchByName([
    'searchName' => 'John'
]);

Using v-dem/queasy-db together with v-dem/queasy-config and v-dem/queasy-log

config.php:

return [
    'db' => [
        'connection' => [
            'dsn' => 'pgsql:host=localhost;dbname=test',
            'user' => 'test_user',
            'password' => 'test_password'
        ],
        'tables' => [
            'users' => [
                'searchByName' => [
                    'sql' => '
                        SELECT  *
                        FROM    "users"
                        WHERE   "name" LIKE concat(\'%\', :searchName, \'%\')',
                    'returns' => Db::RETURN_ALL
                ]
            ]
        ]
    ],

    'logger' => [
        [
            'class' => queasy\log\ConsoleLogger::class,
            'minLevel' => Psr\Log\LogLevel::DEBUG
        ]
    ]
];

Initializing:

$config = new queasy\config\Config('config.php'); // Can be also INI, JSON or XML

$logger = new queasy\log\Logger($config->logger);

$db = new queasy\db\Db($config->db);
$db->setLogger($logger);

$users = $db->users->searchByName([
    'searchName' => 'John'
]);

• All queries will be logged with Psr\Log\LogLevel::DEBUG level. Also it's possible to use any other logger class compatible with PSR-3.