PHP FILTER_SANITIZE_NUMBER_FLOAT Filter
The FILTER_SANITIZE_NUMBER_FLOAT filter removes all illegal characters from a float number.
This filter allows digits and + - by default
Name: "number_float"
ID-number: 520
Possible flags : -
FILTER_FLAG_ALLOW_FRACTION - Allow fraction separator (like . )
FILTER_FLAG_ALLOW_THOUSAND - Allow thousand separator (like , )
FILTER_FLAG_ALLOW_SCIENTIFIC - Allow scientific notation (like e and E)
Example -
The output of the code will be : -
string(7) "5-2+3.3"