- json_decode: documentation ( source)
<?php
echo json_decode('{"0":{"palavras":{"meu":1,"nome":1,"e":1,"joao":1},"total":4},"1":{"palavras":{"meu":1,"nome":1,"e":1,"maria":1},"total":4},"2":{"palavras":{"ola":1,"eu":1,"sou":1,"felipe":1},"total":4},"total_de_palavras":12}');