多个数组转换成字符串,该怎么处理

$a = Array ( 0 => 1, 1 => 2, 2 => 3 );<br />
$b = Array ( 0 => 1, 1 => 2, 2 => 2 );<br />
$c = Array ( 0 => 128, 1 => 108, 2 => 420 );<br />
$d = Array ( 0 => 128, 1 => 216, 2 => 840 );<br />
<br />
echo foo($a, $b, $c, $d);<br />
<br />
function foo() {<br />
  foreach(func_get_args() as $t) {<br />
    foreach($t as $i=>$v)<br />
      $r[$i][] = $v;<br />
  }<br />
  foreach($r as $i=>$v)<br />
    $r[$i] = join('<br><font color='#FF8000'>------解决方案--------------------</font><br>', $v);<br />
  return join('<br><font color='#FF8000'>------解决方案--------------------</font><br>~', $r);<br />
}<br />