PHP library to use JSON files like flat-file database

1.1.4 2018-05-24 08:11 UTC


Build Status Current Version PHP Version

PHP Library to use JSON files like a database.
Functionality inspired by ORM's


  • PHP 5.6+
  • Composer


Easiest way to install Lazer Database is to use Composer. Of course you can use your own autoloader but you must configure it properly by yourself. You can find my Package on

To add library to your dependencies, execute:

composer require greg0/lazer-database


Easiest way to run unit tests is to use composer script

composer run-script test

Structure of table files - table file with data
table_name.config.json - table file with configuration

Basic Usage

First of all you should define constant LAZER_DATA_PATH containing absolute path to folder with JSON files:

define('LAZER_DATA_PATH', realpath(__DIR__).'/data/'); //Path to folder with tables

Then set up namespace:

use Lazer\Classes\Database as Lazer; // example


Chain methods
  • limit() - returns results between a certain number range. Should be used right before ending method find_all().
  • orderBy() - sort rows by key in order, can order by more than one field (just chain it).
  • groupBy() - group rows by field.
  • where() - filter records. Alias: and_where().
  • orWhere() - other type of filtering results.
  • with() - join other tables by defined relations
Ending methods
  • addFields() - append new fields into existing table
  • deleteFields() - removing fields from existing table
  • save() - insert or Update data.
  • delete() - deleting data.
  • relations() - returns array with table relations
  • config() - returns object with configuration.
  • fields() - returns array with fields name.
  • schema() - returns assoc array with fields name and fields type field => type.
  • lastId() - returns last ID from table.
  • find() - returns one row with specified ID.
  • findAll() - returns rows.
  • asArray() - returns data as indexed or assoc array: ['field_name' => 'field_name']. Should be used after ending method find_all() or find().
  • count() - returns the number of rows. Should be used after ending method find_all() or find().

Create database

Lazer::create('table_name', array(
    'id' => 'integer',
    'nickname' => 'string',
    {field_name} => {field_type}

More informations about field types and usage in PHPDoc

Remove database


Check if a database exists

} catch(\Lazer\Classes\LazerException $e){
    //Database doesn't exist


Multiple select

$table = Lazer::table('table_name')->findAll();
foreach($table as $row)

Single record select

$row = Lazer::table('table_name')->find(1);

echo $row->id;

Type ID of row in find() method.

You also can do something like that to get first matching record:

$row = Lazer::table('table_name')->where('name', '=', 'John')->find();

echo $row->id;


$row = Lazer::table('table_name');

$row->nickname = 'new_user';

Do not set the ID.


It's very smilar to Inserting.

$row = Lazer::table('table_name')->find(1); //Edit row with ID 1

$row->nickname = 'edited_user';


Single record deleting

Lazer::table('table_name')->find(1)->delete(); //Will remove row with ID 1

// OR

Lazer::table('table_name')->where('name', '=', 'John')->find()->delete(); //Will remove John from DB

Multiple records deleting

Lazer::table('table_name')->where('nickname', '=', 'edited_user')->delete();

Clear table



To work with relations use class Relation

use Lazer\Classes\Relation; // example

Relation types

  • belongsTo - relation many to one
  • hasMany - relation one to many
  • hasAndBelongsToMany - relation many to many


Chain methods
  • belongsTo() - set relation belongsTo
  • hasMany() - set relation hasMany
  • hasAndBelongsToMany() - set relation hasAndBelongsToMany
  • localKey() - set relation local key
  • foreignKey() - set relation foreign key
  • with() - allow to work on existing relation
Ending methods
  • setRelation() - creating specified relation
  • removeRelation() - remove relation
  • getRelation() - return informations about relation
  • getJunction() - return name of junction table in hasAndBelongsToMany relation

Create relation

Relation::table('table2')->hasAndBelongsToMany('table1')->localKey('id')->foreignKey('id')->setRelation(); // Junction table will be crete automaticly

Remove relation


Get relation information

You can do it by two ways. Use Standard Database class or Relation but results will be different.

Relation::table('table1')->with('table2')->getRelation(); // relation with specified table
Lazer::table('table1')->relations(); // all relations
Lazer::table('table1')->relations('table2'); // relation with specified table


For some examples please check Examples and Tutorial file. More informations you can find in PHPDoc, I think it's documented very well.


If you like and using/want to use my repo or you have any suggestions I will be greatful for sending me few words on e-mail.