Function checkSubmitOnce

Check whether a form has been submitted twice. Registers a sequence number for a form. Checks whether a submitted sequence number is registered in the current session. Depending on the value of is_fatal shows an error or returns true or false. Frees a sequence number from the stack after it's been checked. Frees a sequence number without checking if action == 'free'.

Package: SMF
Copyright: 2020 Simple Machines and individual contributors
License: BSD
Author: Simple Machines https://www.simplemachines.org
Located at Sources/Security.php

Parameters summary
`string`	`$action`	The action - can be 'register', 'check' or 'free'
`boolean`	`$is_fatal = true`	Whether to die with a fatal error

Return value summary
`\|boolean`	If the action isn't check, returns nothing, otherwise returns whether the check was successful

Namespaces

Classes

Interfaces

Exceptions

Functions

Function checkSubmitOnce