1.2.1269. Uninitialized Property

Uninitialized properties are not fully bootstrapped at the end of the constructor.

Properties may be initialized at definition time, along with their visibility and type. Some types are not initialized at definition time, as any object (before PHP 8.2) or resources, so they should be initialized during constructor. At the end of the former, all properties shall have a legit value, and be ready for usage.

PHP 8.1 introduced the possibility to instantiate objects as default value, as long as they only require constant values. This means that those properties may have an object type and a default value.

<?php

class x {
    private $foo = null;
    private $uninited;

    function __construct($arg) {
        $this->foo = $args;

        // $this->uninited is not inited, nor at definition, nor in constructor
        // it will hold null at the beginning of the next method call
    }
}

?>

1.2.1269.1. Connex PHP features

• property

• default-value

1.2.1269.1.1. Suggestions

• Remove the property, and move it to another class

• Add an initialisation for this property

• Give the property a neutral value (object or scalar)

1.2.1269.1.2. Specs

Short name	Classes/UninitedProperty
Rulesets	All, Changed Behavior, Class Review
Exakat since	2.0.9
PHP Version	All
Severity	Minor
Time To Fix	Quick (30 mins)
Precision	Medium
Available in	Entreprise Edition, Exakat Cloud