diff --git a/phpdotnet/phd/Format.php b/phpdotnet/phd/Format.php
index 2ac1d99d..a84f8edb 100644
--- a/phpdotnet/phd/Format.php
+++ b/phpdotnet/phd/Format.php
@@ -317,7 +317,7 @@ final public function parse($xml) {
         $reader = new Reader($this->outputHandler);
         $render = new Render();
 
-        $reader->XML("<notatag>" . $xml . "</notatag>");
+        $reader::XML("<notatag>" . $xml . "</notatag>");
 
         $this->appendToBuffer = true;
         $render->attach($this);
diff --git a/phpdotnet/phd/IndexRepository.php b/phpdotnet/phd/IndexRepository.php
index 0ecf5dd1..a9ca5f0c 100644
--- a/phpdotnet/phd/IndexRepository.php
+++ b/phpdotnet/phd/IndexRepository.php
@@ -62,26 +62,26 @@ public function commit(
         }
 
         foreach ($postReplacementValues as $key => $postReplacementValue) {
-            $postReplacementValues[$key] = $this->db->escapeString($postReplacementValue);
+            $postReplacementValues[$key] = $this->db::escapeString($postReplacementValue);
         }
 
         foreach ($commitList as $key => $commit) {
             $commitList[$key] = sprintf(
                 "INSERT INTO ids (docbook_id, filename, parent_id, sdesc, ldesc, element, previous, next, chunk) VALUES('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d);\n",
-                $this->db->escapeString($commit["docbook_id"]),
-                $this->db->escapeString($commit["filename"]),
-                $this->db->escapeString($commit["parent_id"]),
-                $this->db->escapeString($commit["sdesc"]),
-                $this->db->escapeString($commit["ldesc"]),
-                $this->db->escapeString($commit["element"]),
-                $this->db->escapeString($commit["previous"]),
-                $this->db->escapeString($commit["next"]),
-                $this->db->escapeString($commit["chunk"])
+                $this->db::escapeString($commit["docbook_id"]),
+                $this->db::escapeString($commit["filename"]),
+                $this->db::escapeString($commit["parent_id"]),
+                $this->db::escapeString($commit["sdesc"]),
+                $this->db::escapeString($commit["ldesc"]),
+                $this->db::escapeString($commit["element"]),
+                $this->db::escapeString($commit["previous"]),
+                $this->db::escapeString($commit["next"]),
+                $this->db::escapeString($commit["chunk"])
             );
         }
 
-        $search = $this->db->escapeString("POST-REPLACEMENT");
-        $none = $this->db->escapeString("");
+        $search = $this->db::escapeString("POST-REPLACEMENT");
+        $none = $this->db::escapeString("");
 
         foreach($postReplacementIndexes as $a) {
             if (isset($postReplacementValues[$a["docbook_id"]])) {
@@ -106,11 +106,11 @@ private function saveChangelogs(array $changelog): void {
                 foreach(preg_split('/,\s+/', $entry[2]) as $version) {
                     $log .= sprintf(
                         "INSERT INTO changelogs (membership, docbook_id, parent_id, version, description) VALUES('%s', '%s', '%s', '%s', '%s');\n",
-                        $this->db->escapeString($entry[0] ?? ''),
-                        $this->db->escapeString($id),
-                        $this->db->escapeString($entry[1]),
-                        $this->db->escapeString($version),
-                        $this->db->escapeString($entry[3])
+                        $this->db::escapeString($entry[0] ?? ''),
+                        $this->db::escapeString($id),
+                        $this->db::escapeString($entry[1]),
+                        $this->db::escapeString($version),
+                        $this->db::escapeString($entry[3])
                     );
                 }
             }
@@ -245,7 +245,7 @@ public function getRootIndex(): array|false {
     public function getChangelogsForChildrenOf($bookids): array {
         $ids = [];
         foreach((array)$bookids as $bookid) {
-            $ids[] = "'" . $this->db->escapeString($bookid) . "'";
+            $ids[] = "'" . $this->db::escapeString($bookid) . "'";
         }
         $results = $this->db->query("SELECT * FROM changelogs WHERE parent_id IN (" . join(", ", $ids) . ")");
         return $this->_returnChangelog($results);
@@ -254,7 +254,7 @@ public function getChangelogsForChildrenOf($bookids): array {
     public function getChangelogsForMembershipOf($memberships): array {
         $ids = [];
         foreach((array)$memberships as $membership) {
-            $ids[] = "'" . $this->db->escapeString($membership) . "'";
+            $ids[] = "'" . $this->db::escapeString($membership) . "'";
         }
         $results = $this->db->query("SELECT * FROM changelogs WHERE membership IN (" . join(", ", $ids) . ")");
         return $this->_returnChangelog($results);
@@ -276,7 +276,7 @@ public function getParents(array $renderIds): array {
         $parents = [];
         foreach($renderIds as $p => $v) {
             do {
-                $id = $this->db->escapeString($p);
+                $id = $this->db::escapeString($p);
                 $row = $this->db->query("SELECT parent_id FROM ids WHERE docbook_id = '$id'")->fetchArray(\SQLITE3_ASSOC);
                 if ($row["parent_id"]) {
                     $parents[] = $p = $row["parent_id"];
diff --git a/phpdotnet/phd/Package/IDE/Base.php b/phpdotnet/phd/Package/IDE/Base.php
index f1992040..baf463f4 100644
--- a/phpdotnet/phd/Package/IDE/Base.php
+++ b/phpdotnet/phd/Package/IDE/Base.php
@@ -176,7 +176,7 @@ public static function generateVersionInfo($filename) {
             return $info;
         }
         $r = new \XMLReader;
-        if (!$r->open($filename)) {
+        if (!$r::open($filename)) {
             throw new \Exception;
         }
         $versions = array();
diff --git a/phpdotnet/phd/Package/PHP/Web.php b/phpdotnet/phd/Package/PHP/Web.php
index ad36b7cf..511cf5d6 100644
--- a/phpdotnet/phd/Package/PHP/Web.php
+++ b/phpdotnet/phd/Package/PHP/Web.php
@@ -410,7 +410,7 @@ public static function generateSourcesInfo($filename) {
         }
 
         $r = new \XMLReader;
-        if (!$r->open($filename)) {
+        if (!$r::open($filename)) {
             trigger_error(vsprintf("Can't open the sources file (%s)", [$filename]), E_USER_ERROR);
             return array();
         }
diff --git a/phpdotnet/phd/Package/PHP/XHTML.php b/phpdotnet/phd/Package/PHP/XHTML.php
index 1109038e..4ea8edd3 100644
--- a/phpdotnet/phd/Package/PHP/XHTML.php
+++ b/phpdotnet/phd/Package/PHP/XHTML.php
@@ -262,7 +262,7 @@ public static function generateVersionInfo($filename) {
         }
 
         $r = new \XMLReader;
-        if (!$r->open($filename)) {
+        if (!$r::open($filename)) {
             trigger_error(vsprintf("Can't open the version info file (%s)", [$filename]), E_USER_ERROR);
         }
         $versions = array();
@@ -299,7 +299,7 @@ protected static function generateDeprecatedInfo($filename) {
         }
 
         $r = new \XMLReader;
-        if (!$r->open($filename)) {
+        if (!$r::open($filename)) {
             trigger_error(vsprintf("Can't open the version info file (%s)", [$filename]), E_USER_ERROR);
         }
         $deprecated = array();
@@ -333,7 +333,7 @@ public static function generateAcronymInfo($filename) {
         }
 
         $r = new \XMLReader;
-        if (!$r->open($filename)) {
+        if (!$r::open($filename)) {
             trigger_error(vsprintf("Could not open file for accessing acronym information (%s)", [$filename]), E_USER_ERROR);
         }
 
diff --git a/phpdotnet/phd/TestRender.php b/phpdotnet/phd/TestRender.php
index a0f82f21..e5357fdf 100644
--- a/phpdotnet/phd/TestRender.php
+++ b/phpdotnet/phd/TestRender.php
@@ -15,7 +15,7 @@ public function run() {
                 mkdir($this->config->outputDir, 0755);
             }
             $this->attach($this->index);
-            $this->reader->open($this->config->xmlFile);
+            $this->reader::open($this->config->xmlFile);
             $this->execute($this->reader);
             $this->detach($this->index);
         }
@@ -25,7 +25,7 @@ public function run() {
         }
 
         if (count($this) > 0) {
-            $this->reader->open($this->config->xmlFile);
+            $this->reader::open($this->config->xmlFile);
             $this->execute($this->reader);
         }
     }