php database query fails within Drupal 10 8

I recently converted a website to 8.5.1. As part of the original website, there was a php file that did a database query and displayed the results.  I executed it from a simple HTML link, i.e. <a href=”MyPhpQuery.php”>List by title of the composition</a>. When I run that same .php file from a link in a page within the new D8 site, I just get a white screen and nothing gets displayed. The database hasn’t changed and the .php file worked fine for years, so I feel there must be something simple I’m missing of how to do such a task from within a site. If anyone could point me in a helpful direction, I’m be much appreciative. If it helps, I’ve listed a redacted version of the .php file below. Thanks! ****************** <?php session_start(); ?> <!DOCTYPE HTML PUBLIC “-//W3C//DTD HTML 4.01 Transitional//EN”> <HTML> <head> <meta http-equiv=”Content-Type” content=”text/html; charset=windows-1252″> <meta name=”GENERATOR” content=”Microsoft FrontPage 5.0″> <meta name=”ProgId” content=”FrontPage.Editor.Document”> <meta name=”description” content=”Lex-Ham Community Band Music Inventory sorted by title”> <title>Lex-Ham Community Band Music Inventory by title</title> </head> <BODY> <?php $dbh=mysql_connect (‘localhost Drupal 10 Maintenance and Support Service3306’, ‘MyID’, ‘MyPassword) or die (‘I cannot connect to the database because Drupal 10 Maintenance and Support Service ‘ . mysql_error()); mysql_select_db (“My_MySQLDB”);  $result = mysql_query(             “SELECT * FROM My_MySQLDB.MusicInventory ORDER BY title”);   if (!$result) {     echo(“<P>Error performing query Drupal 10 Maintenance and Support Service ” .          mysql_error() . “</P>”);     exit();   } // Determine the number of records returned $number = mysql_numrows($result); // Print the relevant information  print “<h2>Lex-Ham Community Band Music Inventory</h2>     <table cellpadding=5>     <tr bgcolor=black>       <td><font color=white><b>Number</b></font></td>       <td><font color=white><b>Title</b></font></td>       <td><font color=white><b>Composer</b></font></td>       <td><font color=white><b>Arranger</b></font></td> </tr>”; $recNum = 0; for($i=0; $i<$number; $i++) {     $recNum++;     $title = mysql_result($result, $i, “title”);     $composer = mysql_result($result, $i, “composer”);     $arranger = mysql_result($result, $i, “arranger”);     /* print even-numbered rows with a grey background,             odd-numbered with a white background */         if ($i%2 == 0) {         print “<tr bgcolor=lightgrey>”;         } else {         print “<tr>”;         }     print “<td>$recNum</td>            <td>$title</td>            <td>$composer</td>            <td>$arranger</td> </tr>”;         } print “</table>”; ?> </BODY> </HTML>    version Drupal 10 Maintenance and Support Service  8.x Source Drupal 10 Maintenance and Support Service https Drupal 10 Maintenance and Support Service//www.Drupal 10.org/taxonomy/term/22/feed Source Drupal 10 Maintenance and Support Service Drupal 10 blender

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