Cannot use ‘static’ as constant modifier

Description

static is an option for properties and methods, and it is not available for class constants. A class constant is reachable with the name of the class: as such, it behaves like a static class constant by definition: there are not object’s constants.

Example

<?php

class X {
     private static const A  = 1;
}

?>

Solutions

• Remove the option from the constant signature.

In more recent PHP versions, this error message is now Cannot use the %s modifier on a %s.