filter_var
(PHP 5 >= 5.2.0, PECL filter:0.11.0)
filter_var — Filters a variable with a specified filter
Descrizione
mixed filter_var
( mixed $variable
[, int $filter
[, mixed $options
]] )
Elenco dei parametri
- 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.
Valori restituiti
Returns the filtered data, or FALSE if the filter fails.
Esempi
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));
?>
Il precedente esempio visualizzerà:
string(15) "[email protected]" bool(false)