Scalar types as objects for php
This php library requires php extension from https://github.com/nikic/scalar_objects.
Installation
Run composer require rikudou/scalar-objects.
Usage
The handlers are automatically registered when you include composer autoload. That means you can use it immediately with no configuration.
Since IDEs don't understand the syntax, there are typehint classes available to help you.
Examples
<?php
use Rikudou\ScalarObjects\TypeHint\IntegerTypehint;
use Rikudou\ScalarObjects\TypeHint\StringTypehint;
require_once "vendor/autoload.php";
/** @var IntegerTypehint|int $num1 */
$num1 = 5;
/** @var StringTypehint|string $num2 */
$num2 = "10";
// the two variables are not actually objects, the typehints
// are just for IDE completion
var_dump($num1->isInt()); // bool(true)
var_dump($num2->isString()); // bool(true)
var_dump($num2->isNumeric()); // bool(true)
var_dump($num2->isNumber()); // bool(false) - isNumber() returns true only for int and float
var_dump($num1->toString()->length()); // int(1)
/** @var StringTypehint $string */
$string = "This is a test string";
var_dump($string->length()); // int(21);
var_dump($string->capitalize()); // string(21) "This Is A Test String"
var_dump($string->caseInsensitiveCompare("this Is a TESt STRInG")); // int(0)
var_dump($string->toUpper()); // string(21) "THIS IS A TEST STRING"
var_dump($string->toLower()); //string(21) "this is a test string"
As you can see, you can use the scalar values as objects.
But you can still use them as regular scalar types.
<?php
use Rikudou\ScalarObjects\TypeHint\IntegerTypehint;
use Rikudou\ScalarObjects\TypeHint\StringTypehint;
require_once __DIR__."/vendor/autoload.php";
/** @var StringTypehint|string $string */
$string = "test";
$string .= "test"; // works without a problem
var_dump($string); // string(8) "testtest"
/** @var IntegerTypehint|int $int1 */
$int1 = 5;
/** @var IntegerTypehint|int $int2 */
$int2 = -10;
/** @var IntegerTypehint|int $int3 */
$int3 = "-15";
var_dump($int1 + $int2->abs()); // int(15)
var_dump($int1 + $int2); // int(-5)
var_dump($int1 + $int2 + $int3->toInt()->abs()); // int(10)
