<?php 

declare(strict_types=1);

$engine = wasm_engine_new();
$store = wasm_store_new($engine);
$wasm = file_get_contents(__DIR__ . DIRECTORY_SEPARATOR . 'hello.wasm');
$module = wasm_module_new($store, $wasm);

function hello_callback() {
    echo 'Calling back...' . PHP_EOL;
    echo '> Hello World!' . PHP_EOL;

    return null;
}

$functype = wasm_functype_new(new Wasm\Vec\ValType(), new Wasm\Vec\ValType());
$func = wasm_func_new($store, $functype, 'hello_callback');
wasm_functype_delete($functype);

$extern = wasm_func_as_extern($func);
$externs = new Wasm\Vec\Extern([$extern]);
$instance = wasm_instance_new($store, $module, $externs);

wasm_func_delete($func);

$exports = wasm_instance_exports($instance);
$run = wasm_extern_as_func($exports[0]);

wasm_module_delete($module);
wasm_instance_delete($instance);

$results = wasm_func_call($run, new Wasm\Vec\Val());

wasm_store_delete($store);
wasm_engine_delete($engine);

<?php

declare(strict_types=1);

use Wasm;

require_once __DIR__.'/../vendor/autoload.php';

$engine = Wasm\Engine::new();
$store = Wasm\Store::new($engine);

$wasm = file_get_contents(__DIR__.DIRECTORY_SEPARATOR.'hello.wasm');

$module = Wasm\Module::new($store, $wasm);

function hello_callback()
{
    echo 'Calling back...'.PHP_EOL;
    echo '> Hello World!'.PHP_EOL;

    return null;
}

$functype = Wasm\Functype::new(new Wasm\Vec\ValType(), new Wasm\Vec\ValType());
$func = Wasm\Module\Func::new($store, $functype, 'hello_callback');

$extern = $func->asExtern();
$externs = new Wasm\Vec\Extern([$extern->inner()]);
$instance = Wasm\Module\Instance::new($store, $module, $externs);

$exports = $instance->exports();
$run = $exports[0]->asFunc();

$args = new Wasm\Vec\Val();
$results = $run($args);