<?php /* * By adding type hints and enabling strict type checking, code can become * easier to read, self-documenting and reduce the number of potential bugs. * By default, type declarations are non-strict, which means they will attempt * to change the original type to match the type specified by the * type-declaration. * * In other words, if you pass a string to a function requiring a float, * it will attempt to convert the string value to a float. * * To enable strict mode, a single declare directive must be placed at the top * of the file. * This means that the strictness of typing is configured on a per-file basis. * This directive not only affects the type declarations of parameters, but also * a function's return type. * * For more info review the Concept on strict type checking in the PHP track * <link>. * * To disable strict typing, comment out the directive below. */ declare(strict_types=1); function raindrops(int $number): string { $res = ""; if (!($number % 3)) { $res .= "Pling"; } if (!($number % 5)) { $res .= "Plang"; } if (!($number % 7)) { $res .= "Plong"; } if (!$res) { $res = "$number"; } return $res; }