How to remove non-removable spaces when parsing PHPExcel?

Question

PHP

There is an unloading of Sberbank, which must be parsed and entered into the database. In this case, some values ​​are recalculated. In the numerical graph of the excel, the number looks like 12,000.00, respectively, earlier when parsing the html version of the download, the code gave
str_replace([' ', ','], ['', '.'], $str) the result is 12000.00 with which everything worked. Now spaces are not removed in any way even by such a perverse construction - str_replace([" ","\t","\n","\r","\0","\x0B","\xA0"],' ',$str); The question is how to remove them.
Tried all reasonable variants of the game with encoding, does not help.

Answer 1

You will remove everything except digits and commas with a regex. And then replace the comma with a dot.

Answer 2

Try like this

$str = str_replace(',', '', $str);
$str = preg_replace('/[^\d\.]+/', '', $str);