Minor update:

Fix the crash under PHP 8.x version

PDOPlusPlus.php

@@ -1034,12 +1034,12 @@ private function builtPrepareAndAttachValuesOrParams(string $sql, array $prepare
     {
         // replace tags by the out param value
         foreach ($this->tagsByMode([self::VAR_OUT]) as $tag => $v) {
-            $sql = str_replace($tag, $v['value'], $sql);
+            $sql = str_replace($tag, (string)$v['value'], $sql);
         }
 
         // replace tags by plain sql values
         foreach ($this->tagsByMode([self::VAR_IN_SQL, self::VAR_INOUT_SQL]) as $tag => $v) {
-            $sql = str_replace($tag, self::sqlValue($v['value'], $v['type'], false, $this->current_cnx_id), $sql);
+            $sql = str_replace($tag, (string)self::sqlValue($v['value'], $v['type'], false, $this->current_cnx_id), $sql);
         }
 
         // stop if there's no need to create a statement
@@ -1079,7 +1079,7 @@ private function builtPrepareAndAttachValuesOrParams(string $sql, array $prepare
             $this->params_already_bound = true;
         }
 
-        // explicit casting fot values by ref and rebinding for null values
+        // explicit cast for values by ref and rebinding for null values
         $data_by_ref = $this->tagsByMode([self::VAR_IN_BY_REF, self::VAR_INOUT_BY_REF]);
         foreach ($data_by_ref as $tag => &$v) {
             $current = self::sqlValue($v['value'], $v['type'], true);
@@ -1096,7 +1096,7 @@ private function builtPrepareAndAttachValuesOrParams(string $sql, array $prepare
                 $this->last_bound_type_tags_by_ref[$tag] = $pdo_type($v['type']);
             }
 
-            // explicit casting for var by ref
+            // explicit cast for var by ref
             if ($v['value'] !== null) {
                 $v['value'] = $current[0];
             }

README.md

@@ -4,7 +4,7 @@
 
 ## **A PHP full object PDO Wrapper in one class**
 
-`PDOPlusPlus` (alias `PPP`) is **a one single class PDO Wrapper for PHP** with a
+`PDOPlusPlus` (alias `PPP`) is **a single class PDO Wrapper for PHP** with a
  revolutionary fluid SQL syntax. 
 You do not have anymore to use PDO in classical way, you can completely omit the notions of 
 `prepare()`, `bindValue()`, `bindParam()`. The usage of these mechanisms is now hidden by `PDOPlusPlus`. 
@@ -261,10 +261,8 @@ INSERT INTO t_video (video_title, video_support, video_multilingual, video_chapt
      VALUES (:XMEDem6153, :oASqvP7440, :mbfaTY4236, :FJzRWx7446, :FVHvqL4843, :tcCvZo8956, :JRtazM4176);
 ```
 Let's truncate the table and then add the whole list of films at once.<br>
-This time, I will use a `PDOStatement` based on references (`->bindParam()`) as there are many iterations to do.
-
-Please note, to pass the references to the `PDOPlusPlus` instance, you **MUST** use a specific reference injector
-returned by `->injectorInByRef();`. Otherwise it will not work.
+This time, I will use a `PDOStatement` based on references (`->bindParam()`) as there are many iterations to do. 
+I will use the injector returned by `->injectorInByRef();`. 
 ```php
 include 'PDOPlusPlus.php';
 $ppp = new PPP();