我可以使用PHP匿名函数作为参数，而无需将函数赋值给变量吗？

Does PHP allow the use of an anonymous function as one of the arguments during concatenation?

If so, what is the proper syntax?

For example, here's an example of what I want to get to work:

$final_text = $some_initial_string . function ($array_of_strings)
{
    $out = '';
    foreach ($array_of_strings as $this_particular_string)
    {
        $out .= $this_particular_string;
    }
    return $out;
};

Note: the below is expected to work for PHP Version 7.x but does not work on PHP Version 5.6 (For 5.6, first assign the anonymous function to a variable)

/*
 * Strings before & after
 */
$table_heading_text = "HEADING";
$table_bottom_text = "BOTTOM";

/*
 * Use the function this way
 */
echo $table_heading_text . (function (array $array_of_strings)
{
    $out = '';
    foreach ($array_of_strings as $this_particular_string)
    {
        $out .= $this_particular_string;
    }
    return $out;
})(array(
    "hi",
    "mom"
)) . $table_bottom_text;

In short ...

1. function must return some value that can be converted to text
2. function definition must be enclosed in parenthesis ( ... )
3. Don't forget to have calling arguments after the function definition

Examples:

echo "BEFORE" . (function ($x){return $x;})(" - MIDDLE - ") . "AFTER";
echo "BEFORE" . (function (){return " - MIDDLE - ";})() . "AFTER";

Also, using implode() may be better for this particular task.