What Will Be The Output Of The Following Php Codep Pre Langphp #672

What will be the output of the following PHP code?</p> <pre><code class="language-php" line="1"> <?php function sayHello() { echo "HelloWorld<br />"; } $function_holder = "sayHello"; $function_holder(); ?> </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 Functions - Quiz No.2.

 <?php function sayHello() { echo "HelloWorld<br />"; } $function_holder = "sayHello"; $function_holder(); ?>