What Will Be The Value Of A And B After The Function Call In #29

What will be the value of $a and $b after the function call in the following PHP code?</p> <pre><code class="language-php" line="1"> <?php function doSomething( &$arg ) { $return = $arg; $arg += 1; return $return; } $a = 3; $b = doSomething( $a ); ?> </code></pre>

This multiple choice question (MCQ) is related to the book/course gs gs107 PHP: Hypertext Preprocessor. It can also be found in gs gs107 PHP Basics - PHP Basics - Quiz No.3.

 <?php function doSomething( &$arg ) { $return = $arg; $arg += 1; return $return; } $a = 3; $b = doSomething( $a ); ?>