How to speed up a wordpress function with multiple loops?

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How to speed up a wordpress function with multiple loops?

I am a PHP novice and wrote this function. It is an alphabetical navigation which shows only the letter that have posts in both that letter and the currently filtered "genero" taxonomy term. I use multiple taxonomy queries to find "artistas" posts that, for example, are tagged as both "rock" and "funk". The function works perfectly and outputs exactly what I want it to, but... The multiple loops are really lagging the load time and, being the n00b that...

Answer:

I would just retrieve an array of alphabet/taxonomy terms that have posts. You do this, but doesn't...

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j-man86 at WordPress Mark as irrelevant Undo

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