Good question,
There is two good command in PHP which are
<?php print_r($array2); ?>
All this does it prints out what is in the array with formatting, but if you want a nicer cleaner way to display what really is being held in the array try adding the <pre> tags to get the result just like this
<pre><?php print_r($array2); ?></pre>
Happy Debugging!
Don’t forget: print_r() is just a function in PHP
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