<?php
// 输入一个日期，用程式计算出当天是当年度的第几天?
$m = 2;
$d = 3;
$sYear = array (
"1" => "31",
"2" => "28",
"3" => "31",
"4" => "30",
"5" => "31",
"6" => "30",
"7" => "31",
"8" => "31",
"9" => "30",
"10" => "31",
"11" => "30",
"12" => "31"
);
// 区分 月/日
// ans = 月 array[x-1]之前的总和 + 日
if($m==1)echo $x = $d+ $sYear["0"];
if($m==2)echo $x = $d+ $sYear["0"]+$sYear["1"];
if($m==3)echo $x = $d+ $sYear["0"]+$sYear["1"]+$sYear["2"];
if($m==3)echo $x = $d+ $sYear["0"]+$sYear["1"]+$sYear["2"]+$sYear["3"];
// for ($i=1;$i<$m ;$i++)
// {$x = $d + $sYear[$m-1]; echo $x; }
// var_dump ( $sYear );
?>
请问我该如何把下面那个if 设成循环 每次可以多加一个$year[""];
我设的方法他都只会重复$m-1的月份几次 而不是递加前面的
感谢