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Example code of jotaelesalinas/php-mapreduce

Informations about the package php-mapreduce

php-mapreduce

Latest Version on Packagist Build Status Total Downloads

PHP PSR-4 compliant library to easily do non-distributed local map-reduce.

Install

Via Composer

Basic usage

The output is:

Filters

The output is:

Groups

Group by the value of a field (valid for arrays and objects):

The output is:

Group by a custom value generated from each item:

The output is:

Input

MapReduce accepts as input any data of type iterable. That means, arrays and traversables, e.g. generators.

This is very handy when reading from big files that do not fit in memory.

Multiple inputs can be specified, passing several arguments to setInput(), as long as all of them are iterable:

Output

MapReduce can be configured to write the final data to one or more destinations.

Each destination has to be a Generator:

Multiple outputs can be specified as well:

To help working with input and output generators, it is recommended to use the package jotaelesalinas/php-generators, but it is not mandatory.

You can see more elaborated examples under the folder examples.

Change log

Please see CHANGELOG for more information what has changed recently.

Testing

Contributing

Please see CONDUCT for details.

Security

If you discover any security related issues, please DM me to @jotaelesalinas instead of using the issue tracker.

To do

Credits

License

The MIT License (MIT). Please see License File for more information.

All versions of php-mapreduce with dependencies

PHP Build Version
Package Version
Requires php Version >=8.0
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