php: print_r not working properly

<?php
  $str = "Hello world. It's a beautiful day.";
  print_r (explode(" ",$str));
?>


try add these:

<?php
  $str = "Hello world. It's a beautiful day.";
  echo'<pre>';
  print_r (explode(" ",$str));
  echo'</pre>';

?>


The <pre> HTML tag defines preformatted text.
Text in a pre element is displayed in a fixed-width font (usually Courier), and it preserves both spaces and line breaks.

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