How to perform a natural sort in php using usort

Question

Does anyone know what the function is to perform a natural order sort using the usort function in PHP on an object.

Lets say the object ($obj->Rate)has a range of v

Answer 1

Use strnatcmp for your comparison function. e.g. it's as simple as

function mysort($a, $b) {
   return strnatcmp($a->rate, $b->rate);
}