pimdh

showIntegrationSteps[query_] :=
 WolframAlpha[
  "integrate " <> 
   If[StringQ[query], query, ToString[query, InputForm]],
  {{"IndefiniteIntegral", 2}, "Content"},
  PodStates -> {"IndefiniteIntegral__Step-by-step solution"}]

pimdh

<?php
function route($pattern, $controller)
{
    return function($query) use($pattern, $controller) {
        return (($matches = route_match($pattern, $query)) === false) ?
            false :
            function($registry) use($matches, $controller) {
                return $controller($matches, $registry); 
            }
        ;