What Will Be The Output Of The Following Php Codep Pre Langphp #639

What will be the output of the following PHP code?</p> <pre><code class="language-php" line="1"> <?php function calc($price, $tax="") { $total = $price + ($price * $tax); echo "$total"; } calc(42); ?> </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 Functions - PHP Function Basics - Quiz No.1.

 <?php function calc($price, $tax="") { $total = $price + ($price * $tax); echo "$total"; } calc(42); ?>