regex101: Checks for PHP classes with namespaces that haven't been imported.

Regular Expression

(?:implements|new|@var|extends)\s*(?P<fullNamespace>\\[A-Za-z]+|[A-Za-z]+?(?:\\(?P<class>[A-Za-z]+))+)

New

<?php
declare(strict_types=1);

namespace Jerry\QueryBuilder\Builder;

use Jerry\Interfaces\QueryInterface;
use Jerry\Interfaces\Statements\FilterInterface;
use Jerry\QueryBuilder\Statements\Filters\Where;

class Builder implements Jerry\Interfaces\BuilderInterface\BuilderInterface extends Jerry\Base\Stuff
{
    /** @var Jerry\Interfaces\ConnectorInterface\Foo */
    private $connection;

    /** @var \PDOStatement */
    private $statement;

    /** @var string */
    private $sql;

    /** @var QueryInterface */
    private $query;

    /** @var string */
    private $filterSql;

    /** @var array */
    private $values;

    public function __construct(Jerry\Interfaces\ConnectorInterface $connection)
    {
        $this->connection = $connection;
    }

    public function getResults(QueryInterface $query): array
    {
        $this->query = $query;
        return [];
    }

    private function buildSql(): void
    {
    }

    private function buildFilters(array $filters = [], st

Extraction

<?php
declare(strict_types=1);

namespace Jerry\QueryBuilder\Builder;

use Jerry\Interfaces\QueryInterface;
use Jerry\Interfaces\Statements\FilterInterface;
use Jerry\QueryBuilder\Statements\Filters\Where;

class Builder implements Jerry\Interfaces\BuilderInterface\BuilderInterface extends Jerry\Base\Stuff
{
    /** @var Jerry\Interfaces\ConnectorInterface\Foo */
    private $connection;

    /** @var \PDOStatement */
    private $statement;

    /** @var string */
    private $sql;

    /** @var QueryInterface */
    private $query;

    /** @var string */
    private $filterSql;

    /** @var array */
    private $values;

    public function __construct(Jerry\Interfaces\ConnectorInterface $connection)
    {
        $this->connection = $connection;
    }

    public function getResults(QueryInterface $query): array
    {
        $this->query = $query;
        return [];
    }

    private function buildSql(): void
    {
    }

    private function buildFilters(array $filters = [], st