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Variables
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GetVariableController.php
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<?php declare(strict_types=1); namespace PhpMyAdmin\Controllers\Server\Variables; use PhpMyAdmin\Controllers\AbstractController; use PhpMyAdmin\DatabaseInterface; use PhpMyAdmin\Http\ServerRequest; use PhpMyAdmin\Providers\ServerVariables\ServerVariablesProvider; use PhpMyAdmin\ResponseRenderer; use PhpMyAdmin\Template; use PhpMyAdmin\Util; use function header; use function implode; final class GetVariableController extends AbstractController { /** @var DatabaseInterface */ private $dbi; public function __construct(ResponseRenderer $response, Template $template, DatabaseInterface $dbi) { parent::__construct($response, $template); $this->dbi = $dbi; } /** * @param array $params Request parameters */ public function __invoke(ServerRequest $request, array $params): void { if (! $this->response->isAjax()) { return; } // Send with correct charset header('Content-Type: text/html; charset=UTF-8'); // Do not use double quotes inside the query to avoid a problem // when server is running in ANSI_QUOTES sql_mode $varValue = $this->dbi->fetchSingleRow( 'SHOW GLOBAL VARIABLES WHERE Variable_name=\'' . $this->dbi->escapeString($params['name']) . '\';', DatabaseInterface::FETCH_NUM ); $json = [ 'message' => $varValue[1], ]; $variableType = ServerVariablesProvider::getImplementation()->getVariableType($params['name']); if ($variableType === 'byte') { /** @var string[] $bytes */ $bytes = Util::formatByteDown($varValue[1], 3, 3); $json['message'] = implode(' ', $bytes); } $this->response->addJSON($json); } }