int phql_internal_parse_phql(zval **result, char *phql, unsigned int phql_length, zval **error_msg)
{
	// ...

	cache_level = phalcon_globals_ptr->orm.cache_level;
	if (cache_level >= 0) {
		phql_key = zend_inline_hash_func(phql, phql_length + 1);
		if (phalcon_globals_ptr->orm.parser_cache != NULL) {
			if ((temp_ast = zend_hash_index_find(phalcon_globals_ptr->orm.parser_cache, phql_key)) != NULL) {
				ZVAL_ZVAL(*result, temp_ast, 1, 0);
				Z_TRY_ADDREF_P(*result);
				return SUCCESS;
			}
		}
	}

<?php

use Phalcon\Di\FactoryDefault;
use Phalcon\Mvc\Model;
use Phalcon\Db\Adapter\Pdo\Sqlite;

require './vendor/autoload.php';

$di = new FactoryDefault();

$dbFile = __DIR__ . '/database.sqlite';

if (!file_exists($dbFile)) {
    touch($dbFile);
}

$di->setShared('db', function () use ($dbFile) {
    return new Sqlite([
        'dbname' => $dbFile
    ]);
});

$db = $di->get('db');

$tableExists = $db->fetchOne("
SELECT name FROM sqlite_master 
WHERE type='table' AND name='users'
");

if (!$tableExists) {
    echo "Creating table...\n";

    $db->execute("
        CREATE TABLE users (
            id INTEGER PRIMARY KEY AUTOINCREMENT,
            name TEXT,
            email TEXT
        )
    ");

    $db->execute("
        INSERT INTO users (name,email) VALUES
        ('John','john@test.com'),
        ('Anna','anna@test.com')
    ");
}

class User extends Model
{
    public $id;
    public $name;
    public $email;

    public function initialize()
    {
        $this->setSource('users');
    }
}

while (true) {
    $memory = memory_get_usage(true) / 1024 / 1024;
    $memory = round($memory, 2) . ' MB';
    var_dump($memory);

    $di->get('modelsManager')->createBuilder()
        ->addFrom(User::class)
        ->getQuery()
        ->execute();

    $di->get('modelsManager')->createBuilder()
        ->addFrom(User::class)
        ->getQuery()
        ->execute();

    $di->getShared('modelsManager')->__destruct();
    gc_collect_cycles();
}