Added a method to replace every ',' in a string with a '.'.

app/Http/helpers.php

@@ -52,6 +52,17 @@ function formatAmount(float $amount, $cash = true, $text = false,
     return number_format(abs($amount), $decimals, ',', '.') . $euro;
 }
 
+/**
+ * Replace all commas in a string by a dot. This can be useful to convert
+ * strings that represent a float and use a comma as decimal point to a string
+ * of the same float but with a dot as decimal point.
+ *
+ * @return string
+ */
+function swapComma(string $floatString) {
+    return str_replace(',', '.', $floatString);
+}
+
 /**
  * Return a formatted date string.
  *