JavaScript: Printing to firebug console

  function echo(text)
  {
  	if(!window.console)
  	{
  		alert(text);
  	}
  	else
  	{
  		console.log(text);
  	}
  }

SRC: http://www.getsocialize.com/static/playground/API%20Playgrou...

PHP: Printing arrays

  function A( $array)
  {
    echo "<pre>"; print_r($array); echo "</pre>"; 
  }