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';

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PhpArrayModificationWillNotHaveEffectInspection

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

Inspection Details
By default bundled with:	PhpStorm 2024.2, Qodana for PHP 2024.2,
Can be installed with plugin:	PHP, 242.22893

Last modified: 11 September 2024