Manuale PHP
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filter_var

(no version information, might be only in CVS)

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, arrays are filtered recursively.

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

Esempio 1. A filter_var() example

<?php
var_dump(filter_var('bob@example.com', FILTER_VALIDATE_EMAIL));
var_dump(filter_var('example.com', FILTER_VALIDATE_URL, FILTER_FLAG_SCHEME_REQUIRED));
?>

Il precedente esempio visualizzerà:

string(15) "bob@example.com"
bool(false)

Vedere anche:

filter_var_array()
filter_input()
filter_input_array()
information about the callback type



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filter_var_arrayRisaliFunzioni Firebird/InterBase