Description:
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We have Windows deduplication enabled on our 2016 servers for several years but I think we found something out of whack with the latest PHP version. I originally upgraded from 7.4.7 to 7.4.11, when I had problems I then attempted to downgrade to 7.4.10 and the problem remained, but with 7.4.9 I have no issues.  While our primary web product had some 'Unable to find resource' type errors loading, the simplest example I can provide is our health check script that we have setup for testing Database connectivity.  On versions 7.4.11 and 7.4.10 the SQLite check fails with the error I provided under Actual Result. 


I am using the Windows PHP NTS build as provided on your site. I tested this on 2 servers, and each server would start to work if I either downgraded to php 7.4.9, or disabled Deduplication and ran the powershell script to unoptimize all the files. 

Test script:
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<?php
	include 'includes/autoload.php';

	//SQLite
	$db_path = 'abb20htm.db3';
	$db = new PDO('sqlite:'.$db_path);//connection
	$bookdb3_class = new BookDb3($db);
	$sgt = '3';//res
	$row = $bookdb3_class->getFirstPageLabel($sgt)->getResults();
	//$bookdb3_class->printOut();
	//print_r($row);
	$pageLabel = $row['PageLabel'];
	if ($pageLabel == '1')
		echo 'SQLite test succeeded';
	else
		echo 'SQLite test failed';
	echo '<br>';

?>

Expected result:
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Via a browser, we expect to see...

SQLite test succeeded

Actual result:
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Note: My original health check script had some MySQL and MSSQL health checks that I removed in my example, so line 39 is no longer accurate.

Fatal error: Uncaught PDOException: open_basedir prohibits opening abb20htm.db3 in F:\Sites\ITMonitors\dbtests\default.php:39 Stack trace: #0 F:\Sites\ITMonitors\dbtests\default.php(39): PDO->__construct('sqlite:abb20htm...') #1 {main} thrown in F:\Sites\ITMonitors\dbtests\default.php on line 39