1.2.959. Parent, Static Or Self Outside Class

Parent, static and self keywords must be used within a class, a trait, an interface or an enum. They make no sense outside a class or trait scope, as self and static refers to the current class and parent refers to one of parent above.

PHP 7.0 and later detect some of their usage at compile time, and emits a fatal error. Static may be used in a function or a closure <https://www.php.net/`closure>`_, but not globally.

<?php

class x {
    const Y = 1;

    function foo() {
        // self is \x
        echo self::Y;
    }
}

const Z = 1;
// This lint but won't anymore
echo self::Z;

?>

1.2.959.1. Suggestions

• Make sure the keyword is inside a class context

1.2.959.2. Specs

Short name	Classes/PssWithoutClass
Rulesets	All, Analyze, Changed Behavior
Exakat since	0.8.4
PHP Version	All
Severity	Major
Time To Fix	Quick (30 mins)
Changed Behavior	PHP 7.0 - More
Precision	Very high
Features	parent, self, static, class
Available in	Entreprise Edition, Exakat Cloud