1.2.1270. Unitialized Properties

Properties that are not initialized in the constructor, nor at definition.

With the above class, when m() is accessed right after instantiation, there will be a missing property. Using default values at property definition, or setting default values in the constructor ensures that the created object is consistent.

<?php

class X {
    private $i1 = 1, $i2;
    protected $u1, $u2;

    function __construct() {
        $this->i2 = 1 + $this->u2;
    }

    function m() {
        echo $this->i1, $this->i2, $this->u1, $this->u2;
    }
}
?>

1.2.1270.1. Connex PHP features

• property

1.2.1270.1.1. Suggestions

• Add an explicit initialization for each property.

1.2.1270.1.2. Specs

Short name	Classes/UnitializedProperties
Rulesets	All, Changed Behavior, Suggestions, Top10
Exakat since	0.8.9
PHP Version	All
Severity	Major
Time To Fix	Quick (30 mins)
Precision	Very high
Examples	SPIP
Available in	Entreprise Edition, Exakat Cloud