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EDITING: Misc.php

<?php

/**
 * Miscellaneous utilities.
 */

namespace PhpMyAdmin\SqlParser\Utils;

use PhpMyAdmin\SqlParser\Components\Expression;
use PhpMyAdmin\SqlParser\Statements\SelectStatement;

/**
 * Miscellaneous utilities.
 *
 * @category   Misc
 *
 * @license    https://www.gnu.org/licenses/gpl-2.0.txt GPL-2.0+
 */
class Misc
{
    /**
     * Gets a list of all aliases and their original names.
     *
     * @param SelectStatement $statement the statement to be processed
     * @param string          $database  the name of the database
     *
     * @return array
     */
    public static function getAliases($statement, $database)
    {
        if (! ($statement instanceof SelectStatement)
            || empty($statement->expr)
            || empty($statement->from)
        ) {
            return array();
        }

$retval = array();

$tables = array();

/**
         * Expressions that may contain aliases.
         * These are extracted from `FROM` and `JOIN` keywords.
         *
         * @var Expression[]
         */
        $expressions = $statement->from;

// Adding expressions from JOIN.
        if (! empty($statement->join)) {
            foreach ($statement->join as $join) {
                $expressions[] = $join->expr;
            }
        }

foreach ($expressions as $expr) {
            if (! isset($expr->table) || ($expr->table === '')) {
                continue;
            }

$thisDb = (isset($expr->database) && ($expr->database !== '')) ?
                $expr->database : $database;

if (! isset($retval[$thisDb])) {
                $retval[$thisDb] = array(
                    'alias' => null,
                    'tables' => array()
                );
            }

if (! isset($retval[$thisDb]['tables'][$expr->table])) {
                $retval[$thisDb]['tables'][$expr->table] = array(
                    'alias' => (isset($expr->alias) && ($expr->alias !== '')) ?
                        $expr->alias : null,
                    'columns' => array()
                );
            }

if (! isset($tables[$thisDb])) {
                $tables[$thisDb] = array();
            }
            $tables[$thisDb][$expr->alias] = $expr->table;
        }

foreach ($statement->expr as $expr) {
            if (! isset($expr->column, $expr->alias) || ($expr->column === '') || ($expr->alias === '')
            ) {
                continue;
            }

$thisDb = (isset($expr->database) && ($expr->database !== '')) ?
                $expr->database : $database;

if (isset($expr->table) && ($expr->table !== '')) {
                $thisTable = isset($tables[$thisDb][$expr->table]) ?
                    $tables[$thisDb][$expr->table] : $expr->table;
                $retval[$thisDb]['tables'][$thisTable]['columns'][$expr->column] = $expr->alias;
            } else {
                foreach ($retval[$thisDb]['tables'] as &$table) {
                    $table['columns'][$expr->column] = $expr->alias;
                }
            }
        }

return $retval;
    }
}

CANCEL

Name	Type	Size	Modified	Actions
↩ ..	DIR	—	—
📄 BufferedQuery.php	PHP	13.4 KB	2019-06-04 12:06	EDIT
📄 CLI.php	PHP	5.3 KB	2019-06-04 12:06	EDIT
📄 Error.php	PHP	2.7 KB	2019-06-04 12:06	EDIT
📄 Formatter.php	PHP	21.7 KB	2019-06-04 12:06	EDIT
📄 Misc.php	PHP	3.1 KB	2019-06-04 12:06	EDIT
📄 Query.php	PHP	25.9 KB	2019-06-04 12:06	EDIT
📄 Routine.php	PHP	3.6 KB	2019-06-04 12:06	EDIT
📄 Table.php	PHP	3.7 KB	2019-06-04 12:06	EDIT
📄 Tokens.php	PHP	4 KB	2019-06-04 12:06	EDIT