Bole Chen bolechen

## is_weixin.php
<?php

function is_weixin() {
    if ( strpos($_SERVER['HTTP_USER_AGENT'], 'MicroMessenger') !== false ) {
        return true;
    }
    return false;
}

## ExampleTest.php
<?php
declare(strict_types=1);

namespace Zalas\Tests;

use PHPUnit\Framework\TestCase;

class ExampleTest extends TestCase
{
    /**
	<?php

	function is_weixin() {
	if ( strpos($_SERVER['HTTP_USER_AGENT'], 'MicroMessenger') !== false ) {
	return true;
	}
	return false;
	}
	<?php
	declare(strict_types=1);

	namespace Zalas\Tests;

	use PHPUnit\Framework\TestCase;

	class ExampleTest extends TestCase
	{
	/**