Boolean Prefix (ARCH7007)

Key php.naming.boolean-prefix · Severity info · Category naming

Boolean-typed members and accessors should carry an interrogative prefix such as is, has, can, or should. Without one, conditionals read poorly and intent is unclear.

Incorrect

<?php

class Account
{
    public function active(): bool
    {
        return $this->status === 'open';
    }
}

Correct

<?php

class Account
{
    public function isActive(): bool
    {
        return $this->status === 'open';
    }
}

Fix

Add an interrogative prefix such as is/has/can/should to the boolean accessor.