Modification of the array returned from function by value won't have any effect

Reports call to a function that returns array by value, which makes the assignment operation non-working. Return by reference shall be used instead.

For example:

<?php
class A {
    private $values = [];
    public function getValues() {
        return $this->values;
    }
}
$config = new A();
$config->getValues()['a'] = 'a';

Locating this inspection

By ID

Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

PhpArrayModificationWillNotHaveEffectInspection

Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | PHP | Probable bugs

Availability

By default bundled with: PhpStorm 2024.1, Qodana for PHP 2024.1,
Can be installed with plugin: PHP, 241.SNAPSHOT

Last modified: 18 June 2024