Php and javascript based doubt

PHP is a server-side language, however, JavaScript is a framework that you can use to provide this feature to your clients. If you are using jQuery, then the following control would be helpful to you, Datepicker | jQuery UI[^]. Date formats are provided for you, that you can use, Datepicker | jQuery UI[^].

$("#datepicker").datepicker("option", "dateFormat", "mm/yy");

Secondly, you can also set up the range of your date using "minDate" and "maxDate", for example like this,

$("#datepicker").datepicker({ minDate: new Date() });

All of the rest of the properties are also explained there that you can use. The example codes are also shown there.