php.js/strtolower.js

Use phpjs functions as required.

module.exports=function(){ return strtolower.apply(exports,arguments) };

function strtolower(str) {
  //  discuss at: http://phpjs.org/functions/strtolower/
  // original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
  // improved by: Onno Marsman
  //   example 1: strtolower('Kevin van Zonneveld');
  //   returns 1: 'kevin van zonneveld'

  return (str + '')
    .toLowerCase();
}