What Will Be The Output Of The Following Php Codep Pre Langphp #47

What will be the output of the following PHP code?</p> <pre><code class="language-php" line="1"> <?php $a1 = array_fill(1, 4, "hello"); $b1 = array_fill(5, 1, "php"); $a2 = array_merge($a1, $a2); print_r($a2); echo "<br>"; print_r($b1); ?> </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 Array - PHP Array - Quiz No.2.

 <?php $a1 = array_fill(1, 4, "hello"); $b1 = array_fill(5, 1, "php"); $a2 = array_merge($a1, $a2); print_r($a2); echo "<br>"; print_r($b1); ?> 

Array ( [1] => hello [4] => hello [5] => php ) Array ( [5] => php )

Array ( [1] => hello [2] => hello [3] => hello [4] => hello ) Array ( [5] => php )

Array ( [1] => hello [2] => hello [3] => hello [4] => hello [5] => php ) Array ( [5] => php )

Array ( [1] => hello [2] => hello [3] => hello [4] => hello ) Array ( [1] => php )