filter_var
(PHP 5 >= 5.2.0, PECL filter:0.11.0)
filter_var — Filters a variable with a specified filter
Description
mixed filter_var
( mixed $variable
[, int $filter
[, mixed $options
]] )
Parameters
- variable
-
Value to filter.
- filter
-
ID of a filter to use. Defaults to FILTER_SANITIZE_STRING.
- options
-
Associative array of options or bitwise disjunction of flags. If filter accepts options, flags can be provided in "flags" field of array. For the "callback" filter, callback type should be passed.
Return Values
Returns the filtered data, or FALSE if the filter fails.
Voorbeelden
Example#1 A filter_var() example
<?php
var_dump(filter_var('[email protected]', FILTER_VALIDATE_EMAIL));
var_dump(filter_var('example.com', FILTER_VALIDATE_URL, FILTER_FLAG_SCHEME_REQUIRED));
?>
Het resultaat van dit script is als volgt:
string(15) "[email protected]" bool(false)