How to use FILTER SANITIZE NUMBER FLOAT in PHP

This article describe about FILTER_SANITIZE_NUMBER_FLOAT Filter in PHP.
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FILTER_SANITIZE_NUMBER_FLOAT Filter

For remove all illegal characters from a float number used FILTER_SANITIZE_NUMBER_FLOAT.

By default this filter allows digit and + -

  • Name: "number_float"
  • ID-number: 520

Possible flags:

  • FILTER_FLAG_ALLOW_THOUSAND - Allow thousand separator (like , )
  • FILTER_FLAG_ALLOW_SCIENTIFIC - Allow scientific notation (like e and E)
  • FILTER_FLAG_ALLOW_FRACTION - Allow fraction separator (like . )

Example

<html>
<body>
<?php
$number="9-3f+5.3abcdf";
var_dump(filter_var($number, FILTER_SANITIZE_NUMBER_FLOAT,
FILTER_FLAG_ALLOW_FRACTION));
?>
</body>
</html>

Output

Filtersanitizenumberfloatphp.jpg

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