abstract：<?php $average = function () { $n=func_num_args(); if ($n<1) {$n=1;}; $m=func_get_args(); &
<?php
$average = function () {
$n=func_num_args();
if ($n<1) {$n=1;};
$m=func_get_args();
$result=0;
foreach ($m as $r)
{
$result+=$r;
}
$result = $result / $n;
return $result;
};
//测试单元：
echo $average(440,436)."\n";
echo $average(1,2,3,4,5,6)."\n";
?>
