display error in wp-admin/install.php

When I am opening install.php it is giving me this weird page.

“wp-config.php file. I need this before we can get started. Need more help? We got it. You can create a wp-config.php file through a web interface, but this doesn’t work for all server setups. The safest way is to manually create the file.”); require_once(‘../wp-config.php’); require_once(‘./upgrade-functions.php’); $schema = ( isset($_SERVER[‘HTTPS’]) && strtolower($_SERVER[‘HTTPS’]) == ‘on’ ) ? ‘https://’ : ‘https://’; $guessurl = str_replace(‘/wp-admin/install.php?step=2’, ”, $schema . $_SERVER[‘HTTP_HOST’] . dirname($_SERVER[‘PHP_SELF’]) ); if (isset($_GET[‘step’])) $step = $_GET[‘step’]; else $step = 0; header( ‘Content-Type: text/html; charset=utf-8’ ); ?> “

Please help.