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<?php
/**
* Parse and analyse a SQL query
*/
declare(strict_types=1);
namespace PhpMyAdmin;
use PhpMyAdmin\SqlParser\Utils\Query;
use function count;
use function strcasecmp;
/**
* PhpMyAdmin\ParseAnalyze class
*/
class ParseAnalyze
{
/**
* Calls the parser on a query
*
* @param string $sqlQuery the query to parse
* @param string $db the current database
*
* @return array
*/
public static function sqlQuery($sqlQuery, $db)
{
// @todo: move to returned results (also in all the calling chain)
$GLOBALS['unparsed_sql'] = $sqlQuery;
// Get details about the SQL query.
$analyzedSqlResults = Query::getAll($sqlQuery);
$table = '';
// If the targeted table (and database) are different than the ones that is
// currently browsed, edit `$db` and `$table` to match them so other elements
// (page headers, links, navigation panel) can be updated properly.
if (! empty($analyzedSqlResults['select_tables'])) {
// Previous table and database name is stored to check if it changed.
$previousDb = $db;
if (count($analyzedSqlResults['select_tables']) > 1) {
/**
* @todo if there are more than one table name in the Select:
* - do not extract the first table name
* - do not show a table name in the page header
* - do not display the sub-pages links)
*/
$table = '';
} else {
$table = $analyzedSqlResults['select_tables'][0][0];
if (! empty($analyzedSqlResults['select_tables'][0][1])) {
$db = $analyzedSqlResults['select_tables'][0][1];
}
}
// There is no point checking if a reload is required if we already decided
// to reload. Also, no reload is required for AJAX requests.
$response = ResponseRenderer::getInstance();
if (empty($analyzedSqlResults['reload']) && ! $response->isAjax()) {
// NOTE: Database names are case-insensitive.
$analyzedSqlResults['reload'] = strcasecmp($db, $previousDb) != 0;
}
}
return [
$analyzedSqlResults,
$db,
$table,
];
}
}
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