PHP FILTER_SANITIZE_NUMBER_INT filter

Definition and usage

FILTER_SANITIZE_NUMBER_INT filter removes all illegal characters from numbers.

This filter allows all numbers as well. + -

Name: "number_int"

ID-number: 519

Example

 <?php$number="5-2+3pp";var_dump(filter_var($number, FILTER_SANITIZE_NUMBER_INT));?>

The output of the code looks like this:

 string(5) "5-2+3"