PHP Code to Display an Array in HTML
Simply pass the array of your choice in place of $var and you will get a nice HTML print out.

<?
$var = Array('Test', 'foo' => 'bar', Array('dog', false));
print str_replace('<br&nbsp;/>', '<br />', str_replace(' ', '&nbsp;', nl2br(print_r($var, true))));
?>

e.g.
Array
(
    [0] => Test
    [foo] => bar
    [1] => Array
        (
            [0] => dog
            [1] => 
        )

)


XHTML Valid Code Highlighting
Note: I did not write this code; it was posted in the PHP manual by someone else. I am merely reposting it.

PHP has a useful function called highlight_string that does just that. Unfortunately it is not XHTML compatible in PHP4 (it uses the font tag). Below is fix for those (including myself) still using PHP4.

<?
function xhtmlHighlightString($str, $return=false)
{
   $hlt = highlight_string($str, true);
   $ret = str_replace(
         array('<font color="', '</font>'),
         array('<span style="color: ', '</span>'),
         $hlt);
   if($return)
         return $ret;
   echo $ret;
   return true;
}
?>


Objects within Objectss and Method Names
PHP handles objects within objects just fine normally, with $object1->object2->object2_method() executing successfully. If both classes define methods with the same name, you need to be careful that both objects are correctly initialized. For example:

<?
class class2
{
  public function query()
  {
  }
}
class class1
{
  private $class2;
  
  public __construct()
  {
    $this->class2 = new class2();
  }

  public function query()
  {
    $this->class2->query();
  }
}
?>