https://www.farinspace.com/php-array-combinations/

• php
• multi
• dimensional
• array
• combinations

https://www.outlandish.com/blog/xml-to-json/

• xml
• simplexml
• array
• json
• namespace

https://ericlbarnes.com/2015/04/04/laravel-array-validation/

• laravel
• validation
• rule
• array

https://medium.com/@rtheunissen/efficient-data-structures-for-php-7-9dda7af674cd#.l3v3q82ya

• php7
• php
• data
• structures
• array
• spl
• vector
• deque

http://shiflett.org/blog/2011/jun/sorting-multi-dimensional-arrays-in-php

• php
• sort
• sorting
• array
• multi
• dimensional