Private Member Naming (ARCH7009)

Key php.naming.private-member-naming · Severity info · Category naming

Some codebases mark private members with a leading underscore. When that convention is adopted, private members without the underscore create inconsistency and obscure visibility at a glance.

Incorrect

<?php

class Cache
{
    private $store = [];

    private function evict(): void
    {
        $this->store = [];
    }
}

Correct

<?php

class Cache
{
    private $_store = [];

    private function _evict(): void
    {
        $this->_store = [];
    }
}

Fix

Name private members with a leading underscore per the project convention.