What Will Be The Output Of The Following Php Codep Pre Langphp #643

What will be the output of the following PHP code?</p> <pre><code class="language-php" line="1"> <?php $op2 = "blabla"; function foo($op1) { echo $op1; echo $op2; } foo("hello"); ?> </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 $op2 = "blabla"; function foo($op1) { echo $op1; echo $op2; } foo("hello"); ?>