1.2.1250. Undefined Class Constants¶

Class constants that are used, but never defined. This yield a fatal error upon execution, but no feedback at compile level.

This analysis takes into account native PHP class constants, extensions and stubs. It also disambiguate enumeration cases.

Constants are searched in the typed class or interface, and their parent. They are not searched in the children, since the children are not necessarily available, unless the class is abstract. In particular, one of the children may not define the constant, and when such child is used, it will satisfy the type, but not the constant definition.

<?php

class foo {
    const A = 1;
}

function foo(Foo $f) {
     // here, C is not defined in the code and is reported
     echo foo::A.foo::B.foo::C;

     // This is also an undefined constant
     echo $f::B;
}

?>

See also Class constants.

1.2.1250.2. Connex PHP features¶

class-constant

undefined

1.2.1250.2.1. Suggestions¶

Fix the name of the constant
Add the constant to the current class or one of its parent
Update the constant’s visibility

1.2.1250.2.2. Specs¶

Short name	Classes/UndefinedConstants
Rulesets	All, Analyze, CE, CI-checks, Changed Behavior, LintButWontExec
Exakat since	0.8.4
PHP Version	All
Severity	Major
Time To Fix	Quick (30 mins)
Precision	High
Note	This issue may lint but will not run
Available in	Entreprise Edition, Community Edition, Exakat Cloud