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Pure PHP key-value storage






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v3.0.0 2018-09-18 08:59 UTC

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Last update: 2020-01-24 15:22:27 UTC


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This is simple key-value storage written on PHP. It does not use files, or other database, just pure PHP.


Via Composer:

composer require elfet/pure

Now you can run pure like this: php vendor/bin/pure

Or you can install PurePHP globally to run pure by pure command.

Quick Guide

Start PurePHP by this command:

pure start &

Now PurePHP server is running. Run this command:

pure client

Now you can test PurePHP by simple commands like this:

> pure.queue.collection.push('hello')
> pure.queue.collection.push('world')
> pure.queue.collection.pop() ~ ' ' ~ pure.queue.collection.pop()
string(11) "hello world"

In pure console you can write commands on Expression Language. To exit from console type exit command.


Connection to PurePHP server

$port = 1337; // Default port value
$host = ''; // Default host value
$pure = new Pure\Client($port, $host);


PurePHP provide different types on storages. All supported storages are in src/Storage. You can access them by next methods and work with them like you work with them directly.

You do not need to manually create any collection. They will be automatically create at first access.


Or you can access them by magic methods.


Array Storage ->map

This is simple storage what uses php array to store your data.

To store date in collection use push method:

$pure->map('collection')->push(['hello' => 'world']);

To get value by key from collection use get method:

$value = $pure->map('collection')->get('hello'); // will return 'world'.

To receive all elements use all method:

$all = $pure->map('collection')->all();

You can check if key exist by has method, and delete element by delete method.

Stack Storage ->stack

This storage use SplStack to store your data.

You can use all SplStack methods and also all method.

Queue Storage ->queue

This storage use SplQueue to store your data.

You can use SplQueue methods and also all method.

SplQueue uses enqueue and deenqueue to push and pop from queue. In QueueStorage your can use push and pop methods to do this.

Priority Queue Storage ->priority

This storage use SplPriorityQueue to store your data.

You can use all SplPriorityQueue methods and also all method.


Every storage support function filter.


// Get all elements that more than a 100.
$result = $pure->queue('collection')->filter('value > 100');

// Limit to 10.
$result = $pure->priority('collection')->filter('value > 100', 10);

// Complex expression.
$result = $pure->of('collection')->filter('value["year"] > 2000 and value["name"] matches "/term/"');

Filter rules uses Expression Language. In expression available two variables: key and value.


You can delete storages by delete method:



  • Dump to file
  • Load from file
  • Replication
  • Sharding