PHP. Assigning values to an array within a loop

OK, simple question. New to PHP. How do I accomplish something similar to the following in PHP? This is no specific language intentionally.

i = 0;
j = 0;
k = 50;
While i <= 5
  While j <= 10
    myarray(i,j) = k
      i = i + 1
      j = j + 1
      k = k + 2
  next
next

I have found much info regarding arrays and loops in PHP and none seem to accomplish this simple task. Please don't be snarky... just give me a hand here.

source https://stackoverflow.com/questions/68967203/php-assigning-values-to-an-array-within-a-loop

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