PHP code example of roave / you-are-using-it-wrong

1. Go to this page and download the library: Download roave/you-are-using-it-wrong library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php. 
    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

roave / you-are-using-it-wrong example snippets


 declare(strict_types=1);

namespace My\AwesomeLibrary;

final class MyHelloWorld
{
    /** @param array<string> $people */
    public static function sayHello(array $people) : string
    {
        return 'Hello ' . implode(', ', $people) . '!';
    }
}


 declare(strict_types=1);

// notice the simple type error
echo \My\AwesomeLibrary\MyHelloWorld::sayHello([123, 456]);

sh
$ cd a/project
$ composer install

Loading composer repositories with package information
Updating dependencies (including snip>

roave/you-are-using-it-wrong: checking strictly type-checked packages...
Scanning files...
Analyzing files...

ERROR: InvalidScalarArgument - a-project/src/MyExample.php:4:48 
  - Argument 1 of My\AwesomeLibrary\MyHelloWorld::sayhello expects array<array-key, string>,
    array{0:int(123), 1:int(456)} provided
echo \My\AwesomeLibrary\MyHelloWorld::sayHello([123, 456]);

$ echo $?
1