filter_var

Parametri

variable

Value to filter. Note that scalar values are converted to string internally before they are filtered.

filter

Identificatorul ID al filtrului ce va fi aplicat. Pagina manualului pentru Types of filters afișează filtrele disponibile.

Dacă parametrul este omis, se va utiliza FILTER_DEFAULT, ceea ce este echivalent cu FILTER_UNSAFE_RAW. Aceasta va duce la neaplicarea filtrării în mod implicit.

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, callable type should be passed. The callback must accept one argument, the value to be filtered, and return the value after filtering/sanitizing it.

<?php
// for filters that accept options, use this format
$options = array(
    'options' => array(
        'default' => 3, // value to return if the filter fails
        // other options here
        'min_range' => 0
    ),
    'flags' => FILTER_FLAG_ALLOW_OCTAL,
);
$var = filter_var('0755', FILTER_VALIDATE_INT, $options);

// for filters that only accept flags, you can pass them directly
$var = filter_var('oops', FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE);

// for filters that only accept flags, you can also pass as an array
$var = filter_var('oops', FILTER_VALIDATE_BOOLEAN,
                  array('flags' => FILTER_NULL_ON_FAILURE));

// callback validate filter
function foo($value)
{
    // Expected format: Surname, GivenNames
    if (strpos($value, ", ") === false) return false;
    list($surname, $givennames) = explode(", ", $value, 2);
    $empty = (empty($surname) || empty($givennames));
    $notstrings = (!is_string($surname) || !is_string($givennames));
    if ($empty || $notstrings) {
        return false;
    } else {
        return $value;
    }
}
$var = filter_var('Doe, Jane Sue', FILTER_CALLBACK, array('options' => 'foo'));
?>