PHP Variables Avoiding == Versus = Confusion Problem You don’t want to accidentally assign values when comparing a variable and a constant. Solution Use:            if (12 == $dwarves) { ... } instead of:            if ($dwarves == 12)...

PHP Arrays Randomizing an Array Problem You want to scramble the elements of an array in a random order. Solution Use shuffle():              shuffle($array); Discussion It’s surprisingly tricky to properly shuffle an array. In fact, ...

PHP Arrays Changing Array Size Problem You want to modify the size of an array, either by making it larger or smaller than its current size. Solution Use array_pad() to make an array grow:              // start at three              $arr...