silverstripe-installer/install.php

<?php

/************************************************************************************
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 **                                                                                **
 **  If you can read this text in your browser then you don't have PHP installed.  **
 **  Please install PHP 5.5.0 or higher.                                           **
 **                                                                                **
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if (!file_exists('framework') || !file_exists('framework/_config.php')) include "install-frameworkmissing.html";
else include('./framework/dev/install/install.php');