File: vendor/phpcsstandards/phpcsextra/Universal/Docs/NamingConventions/NoReservedKeywordParameterNamesStandard.xml

<?xml version="1.0"?>
<documentation xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:noNamespaceSchemaLocation="https://phpcsstandards.github.io/PHPCSDevTools/phpcsdocs.xsd"
    title="No Reserved Keyword Parameter Names"
    >
    <standard>
    <![CDATA[
    It is recommended not to use reserved keywords as parameter names as this can become confusing when people use them in function calls using named parameters.
    ]]>
    </standard>
    <code_comparison>
        <code title="Valid: parameter names do not use reserved keywords.">
        <![CDATA[
function foo( $input, $description ) {}
        ]]>
        </code>
        <code title="Invalid: parameter names use reserved keywords.">
        <![CDATA[
function foo( $string, $echo = true ) {}
        ]]>
        </code>
    </code_comparison>
</documentation>