PHP FILTER_SANITIZE_NUMBER_FLOAT filter

Definition and usage

FILTER_SANITIZE_NUMBER_FLOAT filter removes all illegal characters in floating point numbers.

This filter allows all numbers as well as + - by default

Name: "number_float"

ID-number: 520

Possible signs:

FILTER_FLAG_ALLOW_FRACTION - allow decimal separators (e.g. .)

FILTER_FLAG_ALLOW_THOUSAND - allow thousands separators (e.g., )

FILTER_FLAG_ALLOW_SCIENTIFIC - allow scientific notation (such as e and E)

Example

 <?php$number="5-2f+3.3pp";var_dump(filter_var($number, FILTER_SANITIZE_NUMBER_FLOAT,FILTER_FLAG_ALLOW_FRACTION));?>

The output of the code looks like this:

 string(7) "5-2+3.3"