$input->cookie() method

Retrieve a named COOKIE variable value or all COOKIE variables

Please see the cookie API reference page for additional documentation on how to get and set cookies and cookie options.

Cookies are a form of user input, so always sanitize (and validate where appropriate) any values.

The following optional features are available in ProcessWire version 3.0.125 and newer:

  • Provide a sanitization method as the 2nd argument to include sanitization.
  • Provide an array of valid values as the 2nd argument to limit input to those values.
  • Provide a callback function that receives the value and returns a validated value.
  • Provide a fallback value as the 3rd argument to use if value not present or invalid.
  • Append “[]” to the 1st argument to always force return value to be an array, i.e “colors[]”.

Note that the $valid and $fallback arguments are only applicable if a $key argument is provided. See the WireInput::get() method for usage examples (get method works the same as cookie method).

Example

// setting cookies
$input->cookie->foo = 'bar'; // set with default options (expires with session)
$input->cookie->set('foo', 'bar'); // same as above
$input->cookie->set('foo', 'bar', 86400); // expire after 86400 seconds (1 day)
$input->cookie->set('foo', 'bar', [ 'age' => 86400, 'path' => $page->url ]);

// getting cookies
$val = $input->cookie->foo;
$val = $input->cookie->get('foo'); // same as above
$val = $input->cookie->text('foo'); // get and use text sanitizer

// removing cookies
$input->cookie->remove('foo');

// getting cookie options
$array = $input->cookie->options();
print_r($array); // see all options

// setting cookie options (to use in next $input->cookie->set call)
$input->cookie->options('age', 86400); // set default age to 1 day
$input->cookie->options([ // set multiple options
  'age' => 86400,
  'path' => $page->url,
  'domain' => 'www.domain.com',
]);

// setting default options (in /site/config.php):
$config->cookieOptions = [
  'age' => 604800, // 1 week
  'httponly' => true, // make visible to PHP but not JS
   // and so on
]; 

Usage

// basic usage
$mixed = $input->cookie();

// usage with all arguments
$mixed = $input->cookie(string $key = '', $valid = null, $fallback = null);

Arguments

NameType(s)Description
key (optional)string

Name of the COOKIE variable you want to retrieve.

  • If populated, returns the value corresponding to the key or NULL if it doesn't exist.
  • If blank, returns reference to the WireDataInput containing all COOKIE vars.
valid (optional)array, string, int, callable, null

Omit for no validation/sanitization, or provide one of the following:

  • String name of Sanitizer method to to sanitize value with before returning it.
  • CSV string of multiple sanitizer names to process the value, in order.
  • Array of allowed values (aka whitelist), where input value must be one of these, otherwise null (or fallback value) will returned. Values in the array may be any string or integer.
  • Callback function to sanitize and validate the value.
  • Integer if a specific number is the only allowed value other than fallback value (i.e. like a checkbox toggle).
fallback (optional)

Return value

null mixed WireInputData

Returns one of the following:

  • If given no $key argument, returns WireInputData with all unsanitized COOKIE vars.
  • If given no $valid argument, returns unsanitized value or NULL if not present.
  • If given a Sanitizer name for $valid argument, returns value sanitized with that Sanitizer method (3.0.125+).
  • If given an array of allowed values for $valid argument, returns value from that array if it was in the input, or null if not (3.0.125+).
  • If given a callable function for $valid argument, returns the value returned by that function (3.0.125+).
  • If given a $fallback argument, returns that value when it would otherwise return null (3.0.125+).

Exceptions

Method can throw exceptions on error:

  • WireException - if given unknown Sanitizer method for $valid argument


$input methods and properties

API reference based on ProcessWire core version 3.0.236

Latest news

  • ProcessWire Weekly #526
    In the 526th issue of ProcessWire Weekly we'll cover the latest news from the ProcessWire community: newly open sourced Functional Fields module, new site profile to accompany RockFrontend, and more. Read on!
    Weekly.pw / 8 June 2024
  • ProFields Table Field with Actions support
    This week we have some updates for the ProFields table field (FieldtypeTable). These updates are primarily focused on adding new tools for the editor to facilitate input and management of content in a table field.
    Blog / 12 April 2024
  • Subscribe to weekly ProcessWire news

“The end client and designer love the ease at which they can update the website. Training beyond how to log in wasn’t even necessary since ProcessWire’s default interface is straightforward.” —Jonathan Lahijani