php代码如何书写才漂亮

<br />
( function(w) {<br />
var a = 1,<br />
    b= 2,<br />
    fun = function() {<br />
      return a + b;<br />
   };<br />
<br />
w.onload = function(){<br />
  fun();<br />
}<br />
})(window);<br />

<br />
$a = 1;<br />
$b = 2;<br />
function fun() {<br />
    global $a;<br />
    global $b;<br />
    return $a + $b;<br />
}<br />
foreach($_GET as $key=>$val) {<br />
  $$key = urldecode($val);<br />
}<br />
if((int)$getVal > 1) {<br />
  ...<br />
} else {<br />
  ...<br />
}<br />
$val = null;<br />
$arr = array();<br />
foreach($getArr as $val) {<br />
   if(strlen($val) > 0) {<br />
      $arr[] = $val;<br />
   }<br />
}<br />
echo fun(),implode('-',$arr);<br />
exit;<br />