Fix PHP 8.2/8.3 warnings and deprecations

Author: derickr

include/functions.php

@@ -334,7 +334,7 @@ function field($n)
 {
     return oneof(isset($_POST['in']) ?
         htmlspecialchars(isset($_POST['in'][$n]) ? $_POST['in'][$n] : '') : null,
-            htmlspecialchars($GLOBALS['bug'][$n]));
+            htmlspecialchars($GLOBALS['bug'][$n] ?? ''));
 }
 
 /**
@@ -656,7 +656,7 @@ function ($value) {
 
 
     foreach ($bug_groups as $key => $bug_group) {
-        echo "<optgroup label=\"${bug_group[0]}\"" .
+        echo "<optgroup label=\"{$bug_group[0]}\"" .
             (($bug_group[1]) ? $disabled_style : ''), "\n>";
 
         array_unshift($bug_group[2], $key);
@@ -1240,7 +1240,7 @@ function get_package_mail($package_name, $bug_id = false, $bug_type = 'Bug')
         // Security problems *always* go to the sec team
         $to[] = $secBugEmail;
         foreach ($security_distro_people as $user) {
-            $to[] = "${user}@php.net";
+            $to[] = "{$user}@php.net";
         }
         $params = '-f [email protected]';
     }

src/Database/Statement.php

@@ -13,6 +13,7 @@ class Statement extends \PDOStatement
      * \PDOStatement::execute(), on the other hand, returns boolean. Change it
      * to return $this and thus allow further method chaining.
      */
+    #[\ReturnTypeWillChange]
     public function execute($parameters = null): self
     {
         parent::execute($parameters);

www/bug.php

@@ -686,7 +686,7 @@
 <?php if (!empty($bug['assign'])) { ?>
             <td><a href="search.php?cmd=display&amp;assign=<?php echo urlencode($bug['assign']), '">', htmlspecialchars($bug['assign']); ?></a> (<a href="https://people.php.net/<?php echo urlencode($bug['assign']); ?>">profile</a>)</td>
 <?php } else { ?>
-            <td><?php echo htmlspecialchars($bug['assign']); ?></td>
+            <td><?php echo htmlspecialchars($bug['assign'] ?? ''); ?></td>
 <?php } ?>
         </tr>
 
@@ -701,7 +701,7 @@
             <th class="details">PHP Version:</th>
             <td><?php echo htmlspecialchars($bug['php_version']); ?></td>
             <th class="details">OS:</th>
-            <td><?php echo htmlspecialchars($bug['php_os']); ?></td>
+            <td><?php echo htmlspecialchars($bug['php_os'] ?? ''); ?></td>
         </tr>
 
         <tr id="private">

www/search.php

@@ -10,7 +10,7 @@
 
 // Redirect early if a bug id is passed as search string
 if (isset($_GET['search_for']) && preg_match('/^\d+$/', trim($_GET['search_for']), $search_for_id_array)) {
-    redirect("bug.php?id=${search_for_id_array[0]}");
+    redirect("bug.php?id={$search_for_id_array[0]}");
 }
 
 // For bug count only, used in places like doc.php.net
@@ -162,7 +162,7 @@
                 echo '  <td align="center">', format_date(strtotime($row['ts1'])), "</td>\n";
 
                 // Last Modified
-                $ts2 = strtotime($row['ts2']);
+                $ts2 = strtotime($row['ts2'] ?? date('Y-m-d H:i:s'));
                 echo '  <td align="center">' , ($ts2 ? format_date($ts2) : 'Not modified') , "</td>\n";
 
                 // Package