PHP Regular Expression to remove all characters other than numbers and periods

Question

I am trying to use preg_replaceto remove all characters from a string except numbers and period characters.

I can delete everything except numbers, however how can I make an exception for '.' period.

Can anyone help me out?

Answer 1

Try the following:

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

[^0-9.], . , . , ( ], \ ^ -).

Answer 2

,

[^0-9.]

.

$output = preg_replace("/[^0-9.]/", "", $input);