diff --git a/CRM/Campaign/Page/Petition/Confirm.php b/CRM/Campaign/Page/Petition/Confirm.php
index ca31c36b0d00..77d7d1d9c2d8 100644
--- a/CRM/Campaign/Page/Petition/Confirm.php
+++ b/CRM/Campaign/Page/Petition/Confirm.php
@@ -58,10 +58,12 @@ public function run() {
     $pparams['id'] = $petition_id;
     $this->petition = [];
     CRM_Campaign_BAO_Survey::retrieve($pparams, $this->petition);
-    $this->assign('is_share', CRM_Utils_Array::value('is_share', $this->petition));
-    $this->assign('thankyou_title', CRM_Utils_Array::value('thankyou_title', $this->petition));
-    $this->assign('thankyou_text', CRM_Utils_Array::value('thankyou_text', $this->petition));
-    CRM_Utils_System::setTitle(CRM_Utils_Array::value('thankyou_title', $this->petition));
+    $this->assign('is_share', $this->petition['is_share'] ?? FALSE);
+    $this->assign('thankyou_title', $this->petition['thankyou_title'] ?? '');
+    $this->assign('thankyou_text', $this->petition['thankyou_text'] ?? '');
+    if (!empty($this->petition['thankyou_title'])) {
+      CRM_Utils_System::setTitle($this->petition['thankyou_title']);
+    }
 
     // send thank you email
     $params['contactId'] = $contact_id;
diff --git a/CRM/Core/BAO/CustomValueTable.php b/CRM/Core/BAO/CustomValueTable.php
index 1b2c0003de45..f2d7199d98d0 100644
--- a/CRM/Core/BAO/CustomValueTable.php
+++ b/CRM/Core/BAO/CustomValueTable.php
@@ -249,7 +249,7 @@ public static function create($customParams, $parentOperation = NULL) {
             || $fieldExtends === 'Organization'
             || $fieldExtends === 'Household'
           ) {
-            $paramFieldsExtendContactForEntities[$entityID]['custom_' . CRM_Utils_Array::value('custom_field_id', $field)] = $field['custom_field_id'] ?? NULL;
+            $paramFieldsExtendContactForEntities[$entityID]['custom_' . ($field['custom_field_id'] ?? '')] = $field['custom_field_id'] ?? NULL;
           }
         }
 
diff --git a/CRM/Report/Form.php b/CRM/Report/Form.php
index 95b08b81de28..33b3b96d94c9 100644
--- a/CRM/Report/Form.php
+++ b/CRM/Report/Form.php
@@ -3540,11 +3540,11 @@ public function filterStat(&$statistics) {
                 isset($field['options']) &&
                 is_array($field['options']) && !empty($field['options'])
               ) {
-                $value = CRM_Utils_Array::value($op, $pair) . " " .
+                $value = ($pair[$op] ?? '') . " " .
                   CRM_Utils_Array::value($val, $field['options'], $val);
               }
               elseif ($val || $val == '0') {
-                $value = CRM_Utils_Array::value($op, $pair) . " " . $val;
+                $value = ($pair[$op] ?? '') . " " . $val;
               }
             }
             if ($value && empty($field['no_display'])) {
@@ -3648,7 +3648,7 @@ public function getTemplateFileName() {
    */
   public function compileContent() {
     $templateFile = $this->getHookedTemplateFileName();
-    return CRM_Utils_Array::value('report_header', $this->_formValues) .
+    return ($this->_formValues['report_header'] ?? '') .
     CRM_Core_Form::$_template->fetch($templateFile) .
     CRM_Utils_Array::value('report_footer', $this->_formValues);
   }
diff --git a/api/v3/Relationship.php b/api/v3/Relationship.php
index 0c4251254fac..f79b26c64501 100644
--- a/api/v3/Relationship.php
+++ b/api/v3/Relationship.php
@@ -87,10 +87,10 @@ function civicrm_api3_relationship_get($params) {
   }
   else {
     $relationships = CRM_Contact_BAO_Relationship::getRelationship($params['contact_id'],
-      CRM_Utils_Array::value('status_id', $params),
+      $params['status_id'] ?? 0,
       0,
-      CRM_Utils_Array::value('is_count', $options),
-      CRM_Utils_Array::value('id', $params),
+      $options['is_count'] ?? 0,
+      $params['id'] ?? 0,
       NULL,
       NULL,
       FALSE,