Conéctese a una base de datos y ejecute sentencias SQL

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ID URL Método Tipo de Dispositivo Tipo de Sistema Operativo OS Navegador Agente de usuario Fecha solicitada
8559 /es/examples/database-demo GET Bot Bot Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com) 2026-10-06 20:10:05
8558 /en/examples/database-demo GET Bot Bot Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com) 2026-10-06 19:21:13
8557 /en/examples/database-demo GET Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html) 2026-10-06 15:16:36
8556 /en/examples/database-demo GET Bot Bot Mozilla/5.0 (compatible; AwarioBot/1.0; +https://awario.com/bots.html) 2026-10-06 14:10:04
8555 /zh-CN/examples/database-demo GET Bot Bot Mozilla/5.0 (compatible; AwarioBot/1.0; +https://awario.com/bots.html) 2026-10-06 14:06:03
8554 /pt-BR/examples/database-demo GET Bot Bot Mozilla/5.0 (compatible; AwarioBot/1.0; +https://awario.com/bots.html) 2026-10-06 14:05:11
8553 /fr/examples/database-demo GET Bot Bot Mozilla/5.0 (compatible; AwarioBot/1.0; +https://awario.com/bots.html) 2026-10-06 14:04:29
8552 /es/examples/database-demo GET Bot Bot Mozilla/5.0 (compatible; AwarioBot/1.0; +https://awario.com/bots.html) 2026-10-06 14:03:28
8551 /en/examples/database-demo GET Bot Bot Mozilla/5.0 (compatible; AwarioBot/1.0; +https://awario.com/bots.html) 2026-10-06 14:02:57
8550 /ar/examples/database-demo GET Bot Bot Mozilla/5.0 (compatible; AwarioBot/1.0; +https://awario.com/bots.html) 2026-10-06 14:00:22
8549 /en/examples/database-demo GET Bot Bot Mozilla/5.0 (compatible; SemrushBot/7~bl; +http://www.semrush.com/bot.html) 2026-10-06 13:55:33
8548 /fr/examples/database-demo GET Bot Bot Mozilla/5.0 (compatible; SemrushBot/7~bl; +http://www.semrush.com/bot.html) 2026-10-06 12:30:05
8547 /pt-BR/examples/database-demo GET Bot Android Android 6.0.1 Chrome Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/153.0.8010.52 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html) 2026-10-06 12:09:06
8546 /en/examples/database-demo GET Bot Bot Mozilla/5.0 (compatible; DotBot/1.2; +https://opensiteexplorer.org/dotbot; help@moz.com) 2026-10-06 11:01:33
8545 /en/examples/database-demo GET Bot Android Android 6.0.1 Chrome Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/153.0.8010.52 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html) 2026-10-06 10:54:04
8544 /en/examples/database-demo GET Bot Bot Mozilla/5.0 (compatible; SeznamBot/4.0; +https://o-seznam.cz/napoveda/vyhledavani/en/seznambot-crawler/) 2026-10-06 08:23:48
8543 /pt-BR/examples/database-demo GET Desktop Mac Mac OS X Chrome Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36; compatible; OAI-SearchBot/1.4; +https://openai.com/searchbot 2026-10-06 07:41:36
8542 /ar/examples/database-demo GET Bot Bot Mozilla/5.0 (compatible; SeznamBot/4.0; +https://o-seznam.cz/napoveda/vyhledavani/en/seznambot-crawler/) 2026-10-06 07:16:19
8541 /ar/examples/database-demo GET Desktop Windows Windows 10 Chrome Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36 2026-10-06 07:14:51
8540 /fr/examples/database-demo GET Desktop Windows Windows 10 Chrome Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36 2026-10-06 07:14:51

Descripción general del código de base de datos

// Conectarse a una base de datos
$db = new \FastSitePHP\Data\Database($dsn, $user, $password);

// Consulta para registros múltiples
// Devuelve una matriz de registros (matriz asociativa para cada registro).
$sql = 'SELECT * FROM pages';
$records = $db->query($sql);

// Consulta para un registro. Devuelve una matriz asociativa o [nulo] si
// no se encuentra. Tanto [query()] como [queryOne()] admiten parámetros
// opcionales al realizar consultas.
$sql = 'SELECT * FROM pages WHERE id = ?';
$params = [1];
$record = $db->queryOne($sql, $params);

// Utilice [execute()] para INSERT, UPDATE, DELETE, CREATE y otras transacciones.
// Además de usar [?] También puede usar parámetros con nombre en el formato
// de ':nombre'. Los parámetros con nombre pueden hacer que el código sea más
// fácil de leer.
$sql = 'INSERT INTO pages (title, content)';
$sql .= ' VALUES (:title, :content)';
$params = [
    'title'   => 'Database Demo',
    'content' => '<h1>Database Demo<h1>',
];
$rows_affected = $db->execute($sql, $params);

// Se pueden encontrar muchos ejemplos adicionales en la página de
// referencia rápida.

Código PHP para esta página

<?php

namespace App\Controllers\Examples;

use FastSitePHP\Application;
use FastSitePHP\Data\Database;
use FastSitePHP\Lang\I18N;
use FastSitePHP\Web\Request;

class DatabaseDemo
{
    /**
     * Return HTML for the Web Page
     */
    public function get(Application $app, $lang)
    {
        // Load Language File
        I18N::langFile('database-demo', $lang);

        // Add Code Example from text file
        $file_path = $app->config['I18N_DIR'] . '/code/database-demo.{lang}.txt';
        $app->locals['i18n']['db_code'] = I18N::textFile($file_path, $app->lang);

        // Add a record for the request and get the 20 most recent records
        $records = $this->insertAndSelectRecords($app);

        // Render the View
        $templates = [
            'old-browser-warning.htm',
            'examples/database-demo.php',
            'examples/database-demo.htm',
            'table-highlighter.htm',
        ];
        return $app->render($templates, [
            'nav_active_link' => 'examples',
            'records' => $records,
            'controller_code' => file_get_contents(__FILE__),
        ]);
    }

    /**
     * JSON Service that logs requests from button clicks.
     * Returns the 20 most recent records.
     */
    public function routePage(Application $app, $lang, $color)
    {
        return ['records' => $this->insertAndSelectRecords($app)];
    }

    /**
     * Add a record for the request and return recent records
     */
    private function insertAndSelectRecords(Application $app)
    {
        $db = $this->connectToDb();
        $this->insertRecord($app, $db);
        $records = $this->getRecentRecords($db);
        return $records;
    }

    /**
     * Return a Db Connection to a SQLite Database in the Temp
     * Directory. Create the file if it doesn't yet exist.
     */
    private function connectToDb()
    {
        // Path to SQLite Db
        $path = sys_get_temp_dir() . '/database-demo.sqlite';
        $this->checkDb($path);

        // Connect and create table the first time the db is used
        $dsn = 'sqlite:' . $path;
        $db = new Database($dsn);
        $sql = <<<'SQL'
            CREATE TABLE IF NOT EXISTS requests (
                    id INTEGER PRIMARY KEY AUTOINCREMENT,
                    url TEXT,
                    method TEXT,
                    user_agent TEXT,
                    date_requested TIMESTAMP DEFAULT CURRENT_TIMESTAMP
            )
SQL;
        $db->execute($sql);
        return $db;
    }

    /**
     * Delete the SQLite Database every time it reaches over 10 megabytes.
     * It is intended only as a temporary database for this demo page.
     */
    private function checkDb($path) {
        if (is_file($path)) {
            $ten_megabytes = (1024 * 1024 * 10);
            $file_size = filesize($path);
            if ($file_size > $ten_megabytes) {
                unlink($path);
                // Add to a log file each time it's removed
                $log_path = sys_get_temp_dir() . '/database-demo.txt';
                $now = date(DATE_RFC2822);
                $contents = "${path} deleted at ${now}\n";
                file_put_contents($log_path, $contents, FILE_APPEND);
            }
        }
    }

    /**
     * Insert a Record for each Request
     */
    private function insertRecord(Application $app, Database $db)
    {
        $req = new Request();
        $sql = 'INSERT INTO requests (url, method, user_agent) VALUES (?, ?, ?)';
        $params = [$app->requestedPath(), $req->method(), $req->userAgent()];
        $db->execute($sql, $params);
    }

    /**
     * Return the 20 most recent records.
     * The SELECT statement is defined in a [*.sql] file,
     * which allows for easy editing and testing outside of PHP code.
     */
    private function getRecentRecords(Database $db)
    {
        $sql = file_get_contents(__DIR__ . '/../../Models/DatabaseDemo.sql');
        $records = $db->query($sql);
        return $records;
    }
}