--- a/src/Illuminate/Support/Number.php	2026-09-09 16:32:41
+++ b/src/Illuminate/Support/Number.php	2026-09-09 16:32:20
@@ -37,6 +37,12 @@
     {
         static::ensureIntlExtensionIsInstalled();
 
+        if (! class_exists('NumberFormatter')) {
+            $digits = $maxPrecision ?? $precision;
+
+            return number_format($number, $digits ?? 0, '.', ',');
+        }
+
         $formatter = new NumberFormatter($locale ?? static::$locale, NumberFormatter::DECIMAL);
 
         if (! is_null($maxPrecision)) {
@@ -47,7 +53,6 @@
 
         return $formatter->format($number);
     }
-
     /**
      * Parse the given string according to the specified format type.
      *
@@ -186,15 +191,24 @@
     {
         static::ensureIntlExtensionIsInstalled();
 
+        if (! class_exists('NumberFormatter')) {
+            $symbol = trim($in);
+
+            return ($symbol !== '' ? $symbol.' ' : '').number_format($number, $precision ?? 2, '.', ',');
+        }
+
         $formatter = new NumberFormatter($locale ?? static::$locale, NumberFormatter::CURRENCY);
 
         if (! is_null($precision)) {
             $formatter->setAttribute(NumberFormatter::FRACTION_DIGITS, $precision);
         }
 
-        return $formatter->formatCurrency($number, ! empty($in) ? $in : static::$currency);
-    }
+        if ($in !== '') {
+            $formatter->setTextAttribute(NumberFormatter::CURRENCY_CODE, $in);
+        }
 
+        return $formatter->formatCurrency($number, $in);
+    }
     /**
      * Convert the given number to its file size equivalent.
      *
@@ -447,10 +461,5 @@
      */
     protected static function ensureIntlExtensionIsInstalled()
     {
-        if (! extension_loaded('intl')) {
-            $method = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 2)[1]['function'];
-
-            throw new RuntimeException('The "intl" PHP extension is required to use the ['.$method.'] method.');
-        }
-    }
-}
+        // intl extension optional: a native number_format fallback is used when unavailable.
+    }}