--TEST--
Integration of several fixers related to curly braces, empty lines and trailing whitespace.
--RULESET--
{
    "blank_line_before_statement": true,
    "no_extra_blank_lines": {"tokens": ["curly_brace_block"]},
    "no_useless_else": true,
    "no_trailing_whitespace": true,
    "no_whitespace_in_blank_line": true,
    "statement_indentation": true
}
--EXPECT--
<?php

function foo()
{
    if (f1()) {
        if (f2()) {
            return 1;
        }

        return 2;
    } elseif (f3()) {
        return 3;
    }
    f4();
}

--INPUT--
<?php

function foo()
{
    if (f1()) {
        if (f2()) {
            return 1;
        } else {
            return 2;
        }
    } elseif (f3()) {
        return 3;
    } else {
        f4();
    }
}