Fixed error saving values by type

src/Concerns/HasCastable.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace Helldar\PrettyArray\Concerns;
+
+use function addslashes;
+use function is_bool;
+use function is_numeric;
+
+trait HasCastable
+{
+    /**
+     * Castable value.
+     *
+     * @param mixed $value
+     *
+     * @return mixed
+     */
+    protected function castValue($value)
+    {
+        if (is_numeric($value)) {
+            return $value;
+        }
+
+        if (is_bool($value)) {
+            return $value ? 'true' : 'false';
+        }
+
+        return "'" . addslashes($value) . "'";
+    }
+}

src/Services/Formatter.php

@@ -3,12 +3,13 @@
 namespace Helldar\PrettyArray\Services;
 
 use Helldar\PrettyArray\Concerns\HasCases;
+use Helldar\PrettyArray\Concerns\HasCastable;
 use Helldar\PrettyArray\Contracts\Caseable;
 use Helldar\Support\Facades\Arr;
 
 final class Formatter implements Caseable
 {
-    use HasCases;
+    use HasCases, HasCastable;
 
     protected $key_as_string = false;
 
@@ -68,11 +69,7 @@ protected function value($value, int $pad = 1)
             return $this->raw($value, $pad);
         }
 
-        if (is_numeric($value)) {
-            return $value;
-        }
-
-        return "'" . addslashes($value) . "'";
+        return $this->castValue($value);
     }
 
     protected function key($key, int $size = 0)