PHP ManualPseudo-types and variables used in this documentationmixedmixed indicates that a parameter may accept multiple (but not necessarily all) types. gettype() for example will accept all PHP types, while str_replace() will accept strings and arrays. callbackcallback pseudo-types was used in this documentation before callable type hint was introduced by PHP 5.4. It means exactly the same. voidvoid as a return type means that the return value is useless. void in a parameter list means that the function doesn't accept any parameters. ...
![]() |
PHP-Index
New Tutorial entries
|