phpinfo - PHP code example

How to Use the PHP Function phpinfo

PHP is an extremely popular coding language, especially among back-end developers and WordPress users. It can be used to create powerful websites, but it’s important to understand the basic functions and options before you begin. One of these functions is phpinfo, which can be used to display various information about your site’s configuration.

In this article, we’ll show you how to use phpinfo to create a custom page that shows all of your site’s php environment settings. This is particularly helpful for troubleshooting issues with your website’s performance, since it can provide valuable insight into what may be causing the problem.

The phpinfo() function provides a wealth of information about a PHP installation and configuration, including details like installed extensions and modules, configuration settings, and environment variables. This makes it an ideal tool for debugging and understanding what’s affecting a WordPress site’s performance.

Despite the usefulness of the phpinfo() function, it can be dangerous in a production environment. The information it reveals can be a goldmine for hackers, and that’s why it’s recommended to restrict access or disable it once you’re done using it.

To generate a phpinfo report, first, you need to save a phpinfo file in the directory where your website’s files are stored. Then, open the file in a web browser and enter your server address, such as 127.0.0.1 or your fully qualified domain name. You’ll be able to see all of the information in the report, including the list of all enabled PHP functions.

phpinfo example

protected function isSigchildEnabled(): bool
    {
        if (null !== self::$sigchild) {
            return self::$sigchild;
        }

        if (!\function_exists('phpinfo')) {
            return self::$sigchild = false;
        }

        ob_start();
        phpinfo(\INFO_GENERAL);

        return self::$sigchild = str_contains(ob_get_clean(), '--enable-sigchild');
    }

    /** * Reads pipes for the freshest output. * * @param string $caller The name of the method that needs fresh outputs * @param bool $blocking Whether to use blocking calls or not * * @throws LogicException in case output has been disabled or process is not started */

if ( in_array( $mod, $loaded_mods, true ) ) {
            return true;
        }
    }

    if ( empty( $loaded_mods )
        && function_exists( 'phpinfo' )
        && ! str_contains( ini_get( 'disable_functions' ), 'phpinfo' )
    ) {
        ob_start();
        phpinfo( INFO_MODULES );
        $phpinfo = ob_get_clean();

        if ( str_contains( $phpinfo, $mod ) ) {
            return true;
        }
    }

    return $default_value;
}

/** * Checks if IIS 7+ supports pretty permalinks. * * @since 2.8.0 * * @global bool $is_iis7 * * @return bool Whether IIS7 supports permalinks. */

    public function phpinfoAction(): Response
    {
        $this->denyAccessIfProfilerDisabled();

        $this->cspHandler?->disableCsp();

        ob_start();
        phpinfo();
        $phpinfo = ob_get_clean();

        return new Response($phpinfo, 200, ['Content-Type' => 'text/html']);
    }

    /** * Displays the Xdebug info. * * @throws NotFoundHttpException */
    public function xdebugAction(): Response
    {

    public function infoAction()
    {
        $this->get('front')->Plugins()->ViewRenderer()->setNoRender();
        $_COOKIE = [];
        $_REQUEST = [];
        $_SERVER['HTTP_COOKIE'] = null;
        if (\function_exists('apache_setenv')) {
            apache_setenv('HTTP_COOKIE', '');
        }
        phpinfo();
    }

    /** * @return void */
    public function getOptimizersAction()
    {
        $optimizers = $this->get(OptimizerService::class)->getOptimizers();
        $optimizerResult = [];

        foreach ($optimizers as $optimizer) {

/** * Returns the contents of phpinfo(). * * @return \Symfony\Component\HttpFoundation\Response * A response object to be sent to the client. */
  public function php() {
    if (function_exists('phpinfo')) {
      ob_start();
      $phpinfo_flags = Settings::get('sa_core_2023_004_phpinfo_flags', ~ (INFO_VARIABLES | INFO_ENVIRONMENT));
      phpinfo($phpinfo_flags);
      $output = ob_get_clean();
    }
    else {
      $output = $this->t('The phpinfo() function is disabled. For more information, visit the <a href=":phpinfo">Enabling and disabling phpinfo()</a> handbook page.', [':phpinfo' => 'https://www.drupal.org/node/243993']);
    }
    return new Response($output);
  }

}

    private static string $phpBin;
    private static ?Process $process = null;
    private static bool $sigchild;

    public static function setUpBeforeClass(): void
    {
        $phpBin = new PhpExecutableFinder();
        self::$phpBin = getenv('SYMFONY_PROCESS_PHP_TEST_BINARY') ?: ('phpdbg' === \PHP_SAPI ? 'php' : $phpBin->find());

        ob_start();
        phpinfo(\INFO_GENERAL);
        self::$sigchild = str_contains(ob_get_clean(), '--enable-sigchild');
    }

    protected function tearDown(): void
    {
        if (self::$process) {
            self::$process->stop(0);
            self::$process = null;
        }
    }

<?php declare(strict_types=1);
phpinfo();