Write a generic generator function

[nozavroni]

Write a generator function that can wrap any iterator or iterable. It would be used like this (I think... I'm still pretty new to generators).

foreach (generator($iter) as $key => $val) {
    // do something with it... 
}

Research / Resources

• Wikipedia entry for generators
• nikic/iter package - A collection-like set of functions that work using iterators/generators rather than arrays - https://github.com/nikic/iter/blob/master/src/iter.php
• asynchronous php using generators - Using generators rather than extensions or processes or some other crazy nonsense for asynchronous PHP!
• http://php.net/manual/en/class.generator.php
• https://www.sitepoint.com/generators-in-php/
• Save memory by switching to generators
• http://php.net/manual/en/language.generators.syntax.php
• What generators can do for you
• What does yield mean in PHP?
• Useful examples of PHP generators -- including a CSV iterator that uses generators
• http://blog.kevingomez.fr/2016/01/20/use-cases-for-php-generators/
• generators use cases
• quick php generator tutorial
• A really detailed generators tutorial - this one looks really informative and relevant because it goes over the use of yield in conjunction with array_map and array_reduce and various other collection-related classes
• Memory performance boosts with generators and nikic/iter - EXTREMELY useful, extremely relevant generators article about working with generators and CSV data and collection-like functionality. It basically has everything I'm working on right now.

[nozavroni]

Wildly out of scope