--TEST--
Integration of fixers: strict_param,native_function_invocation.
--RULESET--
{"strict_param": true, "native_function_invocation": {"include": ["@internal"]}}
--EXPECT--
<?php

function isUtf8($content)
{
    return \mb_detect_encoding($content, \mb_detect_order(), true);
}

--INPUT--
<?php

function isUtf8($content)
{
    return \mb_detect_encoding($content);
}