Traversing an array starting from the middle item in it is in many ways similar to traversing it from the beginning or the end. One small catch is such that, the middle item, or to be more accurate, the middle index of the array, has to be found before the rest of job can be ...

Square pyramidal numbers and implementing them in PHP Imagine a couple of boxes standing on a table. In each of these boxes there is one or more balls. Boxes are sorted according to the number of balls they contain. When you look into these boxes, you notice, that in the first ...

In this article I look how to compare two ordinary arrays (or objects based on array). The problem can be solved fairly easily using a comparison function. It accepts two items, one from each the arrays and returns a result of the comparison. You combine these results and on the ...

If you have ever tried to obtain a formatted value in PHP, it is likely you did so with one of printf, sprintf of vsprintf functions. In general, these utilities accept a formatting string and one or more arguments. php.net has some good examples and descriptions on how they ...