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Example code of crazzy501/gpt-3-encoder-php

Informations about the package gpt-3-encoder-php

GPT-3-Encoder-Decoder-PHP

PHP BPE Text Encoder/Decoder for GPT-2 / GPT-3

About

GPT-2 and GPT-3 use byte pair encoding to turn text into a series of integers to feed into the model.

This is a PHP OOP implementation of OpenAI's original python encoder and decoder which can be found here. The main source of inspiration for writing this encoder was the NodeJS version of this encoder, found here.

You can test the results, by comparing the output generated by this script, with the official tokenizer page from OpenAI.

Encoder uses caching for store characters arrays for encode/decode that can be configured by using Gpt3EncoderConfiguraion class.

By default, encoder uses php arrays for caching that may be memory intensive, but you can change it to Redis or Memcached driver

Usage

The mbstring PHP extension is needed for this tool to work correctly (in case non-ASCII characters are present in the tokenized text): details here on how to install mbstring

Or

Pass true as second argument to throw exception if decoder can't decode something. Otherwise, it just skips some character

Configuration

All versions of gpt-3-encoder-php with dependencies

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Requires php Version >=8.2
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