Евгений Самсонов

UPDATE tbl
SET number = (@cnt := @cnt + 1)
ORDER BY id DESC, @cnt := 0;

function func() {
    echo '20';
};

ob_start();
func();
$result = ob_get_contents();
ob_end_clean();

$data = [];
$projectId = isset($post_data['project_id']) ? $post_data['project_id'] : null;
foreach ($post_data as $key => $value) {
    if ($key == 'project_id') {
        continue;
    }

    $data[] = [
        'project_id' => $projectId,
        'user_id' => $value
    ];
}

class First
{
    protected $elem1;
    protected $elem2;
    protected $elem3;
    protected $second;

    public function __construct($elem1, $elem2, $elem3, $second)
    {
        $this->elem1 = $elem1;
        $this->elem2 = $elem2;
        $this->elem3 = $elem3;
        $this->second = $second;
    }

    public function start()
    {
        return $this->second->start();
    }
}