[11.x] feat: introduce option to change default Number currency (#53022)

* feat: add perWeek option to Limit

* feat: add perWeek option to Limit

* feat: add perMonth option to Limit

* feat: add perMonth option to Limit

* revert

* feat: introduce option to set default currency and override it

* feat: introduce option to set default currency and override it

src/Illuminate/Support/Number.php

@@ -17,6 +17,13 @@ class Number
      */
     protected static $locale = 'en';
 
+    /**
+     * The current default currency.
+     *
+     * @var string
+     */
+    protected static $currency = 'USD';
+
     /**
      * Format the given number according to the current locale.
      *
@@ -115,13 +122,13 @@ public static function percentage(int|float $number, int $precision = 0, ?int $m
      * @param  string|null  $locale
      * @return string|false
      */
-    public static function currency(int|float $number, string $in = 'USD', ?string $locale = null)
+    public static function currency(int|float $number, string $in = '', ?string $locale = null)
     {
         static::ensureIntlExtensionIsInstalled();
 
         $formatter = new NumberFormatter($locale ?? static::$locale, NumberFormatter::CURRENCY);
 
-        return $formatter->formatCurrency($number, $in);
+        return $formatter->formatCurrency($number, ! empty($in) ? $in : static::$currency);
     }
 
     /**
@@ -284,6 +291,22 @@ public static function withLocale(string $locale, callable $callback)
         return tap($callback(), fn () => static::useLocale($previousLocale));
     }
 
+    /**
+     * Execute the given callback using the given currency.
+     *
+     * @param  string  $currency
+     * @param  callable  $callback
+     * @return mixed
+     */
+    public static function withCurrency(string $currency, callable $callback)
+    {
+        $previousLCurrency = static::$currency;
+
+        static::useCurrency($currency);
+
+        return tap($callback(), fn () => static::useCurrency($previousLCurrency));
+    }
+
     /**
      * Set the default locale.
      *
@@ -295,6 +318,17 @@ public static function useLocale(string $locale)
         static::$locale = $locale;
     }
 
+    /**
+     * Set the default currency.
+     *
+     * @param  string  $currency
+     * @return void
+     */
+    public static function useCurrency(string $currency)
+    {
+        static::$currency = $currency;
+    }
+
     /**
      * Ensure the "intl" PHP extension is installed.
      *