diff --git a/lib/pear/HTML/QuickForm/Renderer/Array.php b/lib/pear/HTML/QuickForm/Renderer/Array.php
index a91d90b7eed..36dd2cefc01 100644
--- a/lib/pear/HTML/QuickForm/Renderer/Array.php
+++ b/lib/pear/HTML/QuickForm/Renderer/Array.php
@@ -138,7 +138,7 @@ class HTML_QuickForm_Renderer_Array extends HTML_QuickForm_Renderer
     * false: leave labels as defined
     * @var bool
     */
-    var $staticLabels = false;
+    var $_staticLabels = false;
 
    /**
     * Constructor
@@ -187,7 +187,6 @@ class HTML_QuickForm_Renderer_Array extends HTML_QuickForm_Renderer
         if ($this->_collectHidden) {
             $this->_ary['hidden'] = '';
         }
-        $this->_elementIdx     = 1;
         $this->_currentSection = null;
         $this->_sectionCount   = 0;
     } // end func startForm
diff --git a/lib/pear/HTML/QuickForm/Renderer/Object.php b/lib/pear/HTML/QuickForm/Renderer/Object.php
index 9928a0b3d58..b4eade768ef 100644
--- a/lib/pear/HTML/QuickForm/Renderer/Object.php
+++ b/lib/pear/HTML/QuickForm/Renderer/Object.php
@@ -124,7 +124,6 @@ class HTML_QuickForm_Renderer_Object extends HTML_QuickForm_Renderer
         if($this->_collectHidden) {
             $this->_obj->hidden = '';
         }
-        $this->_elementIdx = 1;
         $this->_currentSection = null;
         $this->_sectionCount = 0;
     } // end func startForm
diff --git a/lib/pear/PEAR.php b/lib/pear/PEAR.php
index 295bb1e18c4..73909cd4404 100644
--- a/lib/pear/PEAR.php
+++ b/lib/pear/PEAR.php
@@ -815,6 +815,9 @@ class PEAR_Error
     var $userinfo             = '';
     var $backtrace            = null;
 
+    /** @var mixed error level. */
+    private $callback;
+
     /**
      * PEAR_Error constructor
      *
diff --git a/lib/pear/readme_moodle.txt b/lib/pear/readme_moodle.txt
index 556c32f803b..b585c1357e5 100644
--- a/lib/pear/readme_moodle.txt
+++ b/lib/pear/readme_moodle.txt
@@ -35,6 +35,9 @@ MDL-71126 - Quiz: Manual grading page size preference can get stuck at 0
 MDL-76102 / MDL-77081
             PHP 8.1 passing null to a non-nullable argument of a built-in function is deprecated
 MDL-77164 - PHPdocs corrections
+MDL-78145 - PHP 8.2 compliance. Added a missing class property that still need to be declared
+            to avoid dynamic properties deprecated error warning.
+            And also remove the $_elementIdx because it is not needed in Moodle code.
 
 Pear
 ====